Text Box: Parse
 
WORLDS LONGEST CAVES   Compiled by: Bob Gulden - MARCH 13, 2021
CAVES WITH TOTAL LENGTH OF 11000+ METERS (7.456 miles, 39370 feet)
Send updates and corrections to caverbob@aol.com
The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com           Copyright 2021 NSS Geo2, Bob Gulden NSS#13188LF
Do not ask for cave locations, I will not give them out.
CT=CHALK & TUFA & Laterite , C=CONGLOMERATE, G=GYPSUM, L=LAVA, Q=SANDSTONE & QUARTZITE, S=SALT, T=TALUS, BOULDER & GRANITE, UW=UNDERWATER
 
            LENGTH DEPTH    
TYPE # CAVE  NAME COUNTRY STATE COUNTY MILES METERS FEET METERS SOURCE DATE
- 1 Mammoth Cave System   (N.P.) U.S.A. Kentucky Ed./Hart/Bar. 412.000 663050 407 124.1 CRF / CKKC  +/-5 MILES 02/20
UW 2 Sistema Sac Actun (Nohoch Nah Chich, Aktun Hu)     (Underwater+Dry) Mexico Quintana Roo Tulum 231.124 371958 391 119.2 QRSS Long Caves List 07/19
- 3 Jewel Cave    (N.M.) U.S.A. South Dakota Custer 208.510 335564 815 248.4 Adam Weaver e-mail 02/20
UW 4 Sistema Ox Bel Ha           (Underwater)     Mexico Quintana Roo Tulum 168.408 271026 188 57.3 QRSS Long Caves List 07/19
- 5 Suiyang Shuanghe Dongqun China Guizhou Suiyang 160.001 257497 2182 665.0 Zhi Qian FB 10/19
G 6 Optymistychna           Ukraine Ternopil Borshchiv 159.692 257000 49 15.0 Vyacheslav Apostolyuk 09/17
- 7 Wind Cave     (N.P.) U.S.A. South Dakota Custer 154.200 248161 636 193.9 FACEBOOK 02/20
- 8 Lechuguilla Cave   (C.C.N.P.) U.S.A. New Mexico Eddy 150.400 242045 1589 484.2 Hazel Barton e-mail 01/20
- 9 The Clearwater System (Gua Air Jernih)   Malaysia Sarawak Mulu 147.915 238046 1165 355.1 Hugh St.Lawrence e-mail 01/20
- 10 Fisher Ridge Cave System U.S.A. Kentucky Hart 130.001 209216 356 108.5 NSS NEWS V77N11 11/19
- 11 Hoelloch Switzerland Schwyz Muotatal 129.245 208000 3389 1033.0 FB 01/20
- 12 Sistema del Alto Tejuelo Spain Cantabria Porracolina 107.472 172959 2054 626.0 Jordi Perez Serrat e-mail 09/20
- 13 Siebenhengste-hohgant Hoehlensystem Switzerland Bern Eriz/Beat./Ha. 97.555 157000 4396 1340.0 http://ch.speleo.info 06/16
- 14 Schoenberg-Höhlensystem, Schönberg Austria Oberosterreich Totes Gebrige 93.981 151248 3481 1061.0 Theo Pfarr, Robert Seebacher & Lukas Plan 10/19
- 15 Sistema del Mortillano Spain Cantabria Porra de Mortillano 90.099 145000 3117 950.0 Jose Luis Membrado e-mail 09/19
G 16 Ozerna                             . Ukraine Ternopil Borshchiv 87.296 140490 115 35.0 Vyacheslav Apostolyuk 09/17
- 17 Schwarzmooskogel-hoehlensystem , Loser-Augsteck Austria Steiermark Totes Gebirge 84.552 136074 3691 1125.0 Theo Pfarr, Robert Seebacher & Lukas Plan 10/19
- 18 Bullita Cave System (Burke's Back Yard) Australia Northern Territory Gregory N.P. 74.813 120400 75 23.0 Mark Sefton (Cave Exploration Group of South Australia) 09/16
- 19 Sistema del Gandara Spain Cantabria Porracolina 72.539 116740 2671 814.0 Jose Luis Membrado e-mail 09/19
- 20 Toca da Boa Vista Brazil Bahia Campo Formoso 70.836 114000 164 50.0 As Maiores Cavernas Do Basil  01/20
- 21 Marosakabe System Madagascar Mahajaanga Soalala 70.227 113019 - - Olivier Testa e-mail 01/21
- 22 Hiriatzhohle - Schmelzwasserhohle Austria Oberosterreich Dachstein 70.171 112929 5118 1560.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 23 Systeme de Ojo Guarena Spain Burgos Merindad de Sotoscueva 68.351 110000 633 193.0 http://www.grupoedelweiss.com/ 09/16
- 24 Reseau Felix Trombe / Henne-Morte France Haute-Garonne Coume Ouarnede 65.721 105767 3294 1004.0 Caver Tim 10/18
UW 25 Sistema K'oox Baal  - Sistema Tux Kupaxa     (Underwater+Dry) Mexico Quintana Roo Tulum 62.405 100431 113 34.4 QRSS Long Caves List 07/19
- 26 Sistema Purificacion Mexico Tamaulipas Villa Hidalgo 58.257 93755 3127 953.0 http://www.amcs-pubs.org/longanddeep.html 06/16
G 27 Zolushka                             . Ukraine / Moldova Briceni/Cernivci Nowoselyzja 57.216 92080 98 54.0 Igor Teleshman e-mail 09/19
- 28 Sima del Hayal de Ponata-Rebollar II (SI-44,SI-57,SR-7) Spain Araba/Bizkaia/Burgos Sierra Salvada/Gorobel M. 55.923 90000 1362 415.0 Jose Luis Membrado e-mail 08/20
- 29 Sistema Huautla Mexico Oaxaca Huautla de Ji. 55.302 89000 5118 1560.0 Tommy Shifflett 08/19
- 30 Three Counties System United Kingdom England N.York.,Lanc., Cumbria 53.823 86619 692 211.0 Wookey e-mail 10/17
- 31 Complesso del Monte Canin Italy Friuli Venezia Giulia Chiusafoete 52.071 83800 3668 1118.0 Francesco Serafin e-mail 05/20
- 32 Gouffre de la Pierre Saint Martin - gouffre des Partages France / Spain Pyrenees-Atlantiques Pierre Saint Martin 51.977 83649 4619 1408.0 http://arsip.free.fr/index.php?option=com_content&task=view&id=76&itemid=56 01/16
- 33 Friars Hole Cave System U.S.A. West Virginia Green./Pocoho. 48.030 77297 613 186.8 Amy Skowronski 2/21
- 34 Complesso del Monte Corchia (Fighiera,Farol.)- Su Palu Italy Toscana Alpi Apuane 47.224 76000 3894 1187.0 Guido Baroncni Turricchia e-mail 07/17
- 35 Barenschacht Switzerland Bern Beatenberg 47.204 75967 3212 979.0 http://ch.speleo.info 01/16
- 36 Bulmer Caverns ( Castle Keep - Gormenghast) New Zealand South Island Mt Owen 46.178 74316 2477 755.0 Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 37 Cova des Pas de Vallgornera      Spain Balearics Llucmajor 46.132 74242 69 21.0 Jose Luis Membrado e-mail 08/16
- 38 Great Savannah Cave System U.S.A. West Virginia Greenbrier 46.068 74139 588 179.2 Dave Socky 01/21
- 39 Binkley's Cave System U.S.A. Indiana Harrison 45.023 72457 140 42.7 Gary Roberson e-mail 11/20
- 40 Hellhole System U.S.A. West Virginia Pendleton 43.600 70167 737 224.6 GVKS 02/20
- 41 Ogof Draenen United Kingdom Wales Monmouthshire 43.496 70000 495 151.0 www.ukcaves.co.uk/all-longest 01/16
- 42 Complesso della Valle del Nose Italy Lombardia Pian del Tivano 42.432 68288 1870 570.0 Andrea Maconi e-mail 01/21
- 43 Fort Stanton Cave U.S.A. New Mexico Lincoln 42.270 68027 441 134.4 Lee H.Skinner e-mail 10/20
- 44 San Wang Dong China Chongqing Wulong 42.145 67825 1125 343.0 Descent 231 05/16
- 45 Botovskaya Russia Lrkutsk Sredne 42.096 67747 131 40.0 Alexander Osinzev e-mail 02/15
- 46 Dachstein-MammutHoehle Austria Oberosterreich Dachstein 41.903 67437 3960 1207.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 47 Reseau de l'Alpe France Isere / Savoie Chartreuse 41.801 67272 2149 655.0 Jose Luis Membrado e-mail 01/16
- 48 Sistema de los Cuatro (4) Valles  Spain Cantabria Solorzano 41.710 67126 358 109.0 Juan Corrin e-mail 09/19
L 49 Kazumura Cave                     (Lava Tube) U.S.A. Hawaii Hawaii 40.700 65500 3614 1101.5 HSS Newsletter N9P7 06/16
- 50 Double Bopper Cave U.S.A. Arizona Coconino 40.600 65339 618 188.4 Shane McCurdy e-mail 03/19
- 51 Blue Spring Cave                U.S.A. Tennessee White 40.000 64374 307 93.6 Jason Riichards e-mail 10/16
- 52 Carlsbad Cavern   (C.C.N.P.) U.S.A. New Mexico Eddy 39.500 63569 1035 315.5 Vidio on liine 12/19
- 53 Organ Cave System U.S.A. West Virginia Greenbrier 38.452 61882 486 148.1 WVASS Database 05/16
- 54 Arresteliako ziloa(Souffleur de Larrandaburu) France Pyre. Atlantiques/Navarra Pierre Saint Martin 37.868 60943 2740 835.0 http://arsip.free.fr/ 09/16
UW 55 Sistema Xunaan Ha     (Underwater+Dry) Mexico Quintana Roo Tulum 37.559 60445 111 33.8 QRSS Long Caves List 07/19
- 56 Cueva del Valle (Red Del Silencio) Spain Cantabria Vizcaya 37.421 60223 1565 477.0 www.federacionaragonesaespeleologia.com/ 05/16
- 57 Lämprechtsofen Höhlensystem Austria Salzburg Leoganger Steinberge 37.282 60000 5692 1735.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
C  58 Bol'shaja Oreshnaja            (Conglomerate) Russia Russia Kransnojarsk 36.040 58000 787 240.0 International Caver 2000 P78 06/17
- 59 Kap-Kutan/Promezhutochnaja Turkmenistan Turkistan Gissarsko-Ala. 35.418 57000 1017 310.0 RSIC 06/17
UW 60 Wakulla-Leon Sinks Cave System           U.S.A. Florida Leon/Wakulla 35.220 56681 350 106.7 Casey McKinlay e-mail 03/20
- 61 Sistema de Atxuriaga (Complex) Spain Bizkaia Galdames 34.797 56000 1791 546.0 Jose Luis Membrado e-mail 08/20
- 62 Whigpistle System U.S.A. Kentucky Edmonson 34.620 55715 314 95.7 2009 NSS/ICS Kerrville Texas 07/16
- 63 Systeme du Granier France Isere / Savoie Chartreuse 34.379 55327 1850 564.0 d'Eric Sibert 02/15
- 64 Sistema Cheve (Cuicateco) Mexico Oaxaca Cuicatlan 34.180 55007 5000 1524.0 Bill Stone e-mail 05/19
- 65 Mamo Kananda Papua New Guinea Southern Highland Muller Range 34.051 54800 1732 528.0 Atlas Des Grandes Cavites Mondia. 06/17
- 66 Gr. Caverna de Palmarito Cuba Pinar del Rio S. de Vinales 33.554 54000 0 0.0 Info CREI 2001 N10 06/17
- 67 Jamski sustav Crnopac Croatia Juzni Velebit Crnopac 33.133 53323 2615 797.0  FB 3/21
G 68 Mlynky                     . Ukraine Ternopil Chortkiv 32.885 52923 66 20.0 cavemlynky@gmail.com  01/19
- 69 Teng Long Dong China Hubei Lichuan 32.808 52800 0 0.0 www.hongmeigui.net/deepandlong.php 07/16
- 70 Grotte de Saint-Marcel France Ardeche Bas-Vivarais 31.814 51200 764 233.0 Spelunca No.103,FFS 05/16
- 71 Benarat Caverns System  (lubang Benerat)  Malaysia Sarawak Mulu 31.484 50669 381 116.0 Mulu Caves Project 08/19
UW 72 Sistema Pool Tunich  (Under Water + Dry) Mexico Quintana Roo Tulum 31.318 50401 79 24.0 QRSS Long Caves List 07/19
- 73 Reseau de la Dent de Crolles France Isere Chartreuse 31.131 50101 2208 673.0 Jean-Yves Bigot 01/16
- 74 Ogof Ffynnon Ddu United Kingdom Wales Powys 31.069 50000 899 274.0 www.ukcaves.co.uk/all-longest 01/16
- 75 Pestera Vantului Romania Bihor Mtii Padurea Craiului 31.069 50000 558 170.0 Liviu Valenas e-mail 10/19
- 76 Crevice Cave U.S.A. Missouri Perry 30.890 49713 190 57.9 Chad McCain e-mail 03/18
- 77 Sistema Itxina'pe Sarea Spain Bizkaia Gorbea 30.540 49150 0 0.0 Jose Luis Membrado e-mail 10/18
- 78 Sistema de Anielarra  (Anialarra) Spain Nafarroa Larra 29.839 48022 2799 853.0 Jose Luis Membrado e-mail 01/21
UW 79 Sistema Toh Ha   (Underwater) Mexico Quintana Roo Tulum 29.668 47746 42 12.8 QRSS Long Caves List 07/19
- 80 Scott Hollow Cave U.S.A. West Virginia Monroe 29.500 47476 571 174.0 WVASS Spring Meeting 05/16
- 81 Omega System U.S.A. Virginia Wise 29.430 47363 1263 385.0 Mike Ficco e-mail 06/16
  82 Sistema Garra de Jaguar (Jaguar Claw) Mexico Quintana Roo Tulum 29.259 47088 0 0.0 QRSS Long Caves List 07/19
L 83 Delissea Cave System U.S.A. Hawaii Hawaii 29.210 47009 3610 1100.3 Peter Bosted e-mail 02/20
- 84 Memorial Day Cave U.S.A. West Virginia Pendleton 29.030 46719 579 176.5 GVKS 12/20
- 85 Santo Tomas (gran caverna de) Cuba Pinar del Rio S. de Quemadas 28.583 46000 0 0.0 The NSS News V57N10P300 10/99
- 86 Sistema Aranonera (Sima S1-S2)(Tendenera connected) Spain Huesca Pirineos 28.115 45246 4426 1349.0 Jose Luis Membrado e-mail 10/16
- 87 Grotte de la Diau France Haute Savoie Parmelan 27.962 45000 2297 700.0 Bertrand Hauser 02/15
- 88 Kolkbluser-Monster-Höhlensystem Austria Salzburg Steinernes Meer 27.643 44487 2372 723.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 89 Cumberland Caverns                (Saltpeter) U.S.A. Tennessee Warren 27.616 44444 200 61.0 Charles Cole 03/92
- 90 Migovec (Vrtnarija) System (M-16) Slovenia Primorska zaledje Tolminke 27.084 43588 3189 972.0 Marko Erker e-mail 04/20
- 91 Demanovsky jaskynny system      Slovakia Nizke Tatry Demanovske vrchy 26.741 43036 643 196.0 Pavel Herich e-mail 2/21
- 92 Trou qui souffle France Isere Vercors 26.657 42900 2198 670.0 Descent 243 P32 04/17
- 93 Frauenmauer-Langstein-Höhlensystem Austria Steiermark Hochsehwab 26.536 42706 2077 633.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 94 Er Wang Dong China Chongqing Wulong 26.184 42139 1447 441.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_gro.php?op=deve 08/16
- 95 Tham Khoun Dori - Houay Sai System Cave Laos Khammouane Ban Na 26.145 42077 853 260.0 Charles Ghommidh e-mail 01/16
L 96 Kipuka Kanohina Cave (Kula Kai Caverns)  U.S.A. Hawaii Hawaii 26.104 42010 945 288.0 Kanohina Data Manager - Tomislav Gracanin e-mail 06/19
- 97 Scialet de les Nuits Blanches - Superieur du clos d'Aspres France Isere Vercors 26.098 42000 3497 1066.0 Xavier Robert e-mail 04/19
- 98 Eisriesenwelt Austria Salzburg Tennengebirge 26.098 42000 1335 407.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 99 Reseau des Chuats France Drome Vercors 26.098 42000 0 0.0 Xavier Robert e-mail 04/19
- 100 Gouffre de Padirac France Lot Causse de Gramat 25.476 41000 853 260.0 http://www.gouffre-de-padirac.com/index.htm 06/16
- 101 Gamslöcher-Kolowrats-Hösystem Austria Salzburg Untersberg 25.199 40554 3707 1130.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 102 Cueva del Tecolote Mexico Tamaulipas Villa Hidalgo 25.150 40475 1391 424.0 Mark Minton e-mail 05/16
- 103 Sloans Valley Cave System U.S.A. Kentucky Pulaski 24.640 39654 240 73.2 The International Caver N19P23 05/97
- 104 System Amaterskej a Punkevni Jesky. Czech Rep. Moravia Ostrov 24.324 39146 1631 497.0 Libor Faitl e-mail 01/16
- 105 Chiquibul Cave System (Cebaba & Actun Tunkul) Belize Mt Junea West Chiquibul 24.233 39000 525 160.0 Tom Miller e-mail 01/16
- 106 Sistema de las Fuentes de Escuain (Badalona B15-B1) Spain Huesca Escuain 24.093 38774 3776 1151.0 Jose Luis Membrado e-mail 2/21
- 107 Xanadu Cave System U.S.A. Tennessee Fentress 24.062 38724 227 69.2 Tenn.Cave Survey 02/15
- 108 Silberensystem (Schwyzerschacht) Switzerland Schwyz Muotatal 23.992 38611 2915 888.4 http://ch.speleo.info 06/16
- 109 Jiangzhou Dongxuexitong China Guangxi Fengshan 23.923 38500 492 150.0 www.hongmeigui.net/deepandlong.php 04/17
- 110 Nettlebed Cave System  (Blizzard Pot top entrance,Stormy Pot) New Zealand South Island Mt Arthur 23.769 38252 3852 1174.0 Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 111 Sistema de Pan de Azucar Cuba Pinar del Rio S.del Rosario 23.612 38000 0 0.0 The NSS News V57N10P300 10/99
- 112 Sistema Cuetzalan - Atepolihuit Mexico Puebla Curtzalan 23.411 37676 2159 658.0 Mark Minton e-mail 06/16
- 113 Grotte de la Luire France Drome Vercors 23.341 37563 1795 547.0 The International Caver #24 P36 06/17
- 114 Sistema Cueto-Coventosa-Cubera-Garma Bucebrón-Corzo Spain Cantabria Porracolina 23.151 37258 2720 829.0 Jose Luis Membrado e-mail 01/21
- 115 Moore Cave System  (Berome & Tom) U.S.A. Missouri Perry 23.040 37079 136 41.5 Chad McCain FB 12/20
- 116 The Hole (Boggs Cave) U.S.A. West Virginia Greenbrier 23.003 37020 225 68.6 Bill Balfour 09/91
- 117 Sistemul Humpleu-Poienita Romania Cluj Mtii Bihor  22.742 36600 1030 314.0 Victor Ursu e-mal 01/16
- 118 Coral Cave System U.S.A. Kentucky Pulaski 22.560 36307 340 103.6 Lee Florea e-mail 2/15
- 119 Sugar Run Cave System U.S.A. Virginia Giles 22.550 36291 718 218.8 VSS 02/15
- 120 Complesso dei Piani Eterni Italy Veneto Dolomiti BL 22.469 36160 3451 1052.0 Francesco Sauro e-mail 10/20
- 121 Lost River Cave System U.S.A. Indiana Orange 22.200 35727 94 28.7 Long cave list for Indiana, Indiana Cave Survey 03/17
- 122 Lilburn Cave  (N.P.) U.S.A. California Tulare 22.170 35679 508 154.8 Jed Mosenfelder e-mail 01/19
- 123 Chestnut Ridge Cave System U.S.A. Virginia Bath 22.063 35507 814 248.0 BCCS 10/19
- 124 Complesso di Piaggia Bella Italy Piemonte Marguareis 22.059 35500 3153 961.0 http://www.Class.del.g.piulunghe/profon.d'Italia 06/17
- 125 Xia, Qikeng, Lanmu Shu, Miao Keng, Xiaogu Chi. Dongba Dong China Chongqing Wulong 22.046 35479 3346 1020.0 http://hongmeigui.net/deepandlong.php?stat+long 08/16
- 126 Cueva la Vallina (VT.100) Spain Cantabria Arredondo 21.938 35305 646 197.0 Jose Luis Membrado e-mail 01/21
- 127 Complesso della Carcaraia (Abisso Saragato) Italy Toscana Alpi Apuane 21.748 35000 3691 1125.0 Speleologia N68P102-103  07/17
- 128 Reseau Andre Lachambre (grotte d'Embulla) France Pyrenees-Orientales Conflent 21.748 35000 243 74.0 D'apres Christophe Levillain 06/17
- 129 Toca da Barriguda Brazil Bahia - 21.748 35000 200 61.0 As Maiores Cavernas Do Basil  01/20
- 130 Cueva de Udias Spain Cantabria - 21.748 35000 0 0.0 Juan Corrin e-mail 11/20
- 131 Mesacny tien  Slovakia Vysoke Tatry Javorinska Siroka 21.744 34994 1480 451.0 Branislav šmida 2/21
- 132 Greenlink - Middle Earth  System New Zealand South Island Takaka Hill 21.687 34902 1276 389.0 Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 133 TantalHöhle Austria Salzburg Hagengebirge 21.539 34664 1427 435.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 134 Mawandong China Guizhou Zhengan 21.535 34657 1821 555.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_gro.php?op=deve 2/15
- 135 Sistema Azpilicueta-Coteron-Renada (Sistema de la Vega) Spain Cantabria Ruesga 21.489 34583 1112 339.0 Juan Corrin e-mail 09/19
- 136 Atea Kananda Papua New Guinea Southern Highland Muller Range 21.437 34500 1148 350.0 The British Caver V94-95 06/17
- 137 Majaguas-Cantera (sis.caverna.) Cuba Pinar del Rio S.de San Carlo 21.127 34000 0 0.0 The International Caver 06/17
- 138 Hidden River System (Hicks Cave) U.S.A. Kentucky Hart 21.100 33957 160 48.8 Carbide Caver V7I10P111 10/98
- 139 Culverson Creek Cave System U.S.A. West Virginia Greenbrier 20.928 33680 329 100.3 WVASS Database 06/16
- 140 Blue Spring Cave U.S.A. Indiana Lawrence 20.900 33635 140 42.7 Long cave list for Indiana, Indiana Cave Survey 03/17
- 141 Ellis Basin System (Tomo Thyme, Exhaleair, & Exhalibur) New Zealand South Island Mt Arthur 20.754 33400 3366 1026.0 Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 142 Reseau du Verneau France Doubs Deservillers 20.692 33300 1270 387.0 Jean-Yves Bigot 01/16
- 143 Honey Creek Cave U.S.A. Texas Comal 20.689 33296 124 37.8 Texas Speleological Survey via Jerry Atkinson e-mail 08/16
- 144 Sistema de la Pena de Mediodia Spain Huesca Pirineos 20.677 33276 2959 902.0 Jose Luis Membrado e-mail 12/20
- 145 Sistema Lecherines Spain Huesca Macizo de Aspe 20.530 33040 3310 1009.0 Jose Luis Membrado e-mail 01/21
- 146 Carroll Cave U.S.A. Missouri Camden 20.310 32686 224 68.3 Bob Lerch e-mail 03/19
- 147 Terikan System (Rising, East, West) Malaysia Sarawak Mulu 20.239 32572 0 0.0 Mulu Caves Project 08/19
- 148 Ogof Agen Allwedd United Kingdom Wales Powys, Monmouthshire 20.195 32500 525 160.0 www.ukcaves.co.uk/all-longest 01/16
- 149 Cueva de los Chorros Spain Albacete Riopar 20.195 32500 427 130.0 Clasificacion Por Desnivel 07/16
- 150 Gap Cave System (Cudjo's)   (C.G.N.H.P.) U.S.A. Virginia Lee 19.884 32000 491 149.7 Bob Gulden (CRF) 04/19
- 151 Gouffre Berger - Gouffre de la Fromagere France Isere Vercors 19.753 31790 4341 1323.0 Caver Tim 10/18
- 152 Kihaje Xontjoa Mexico Oaxaca Cerro Rabon P. 19.494 31373 4012 1223.0 http://www.amcs-pubs.org/longanddeep.html 06/16
- 153 Grotta di Monte Cucco Italy Umbria Monte Cucco 19.449 31300 3048 929.0 Class.del.g.piu lunghe/profon.d'Italia 06/17
- 154 Systeme Prerouge - Litorne France Savoie Bauges 19.444 31292 1667 508.0    01/16
- 155 Krem Liat Prah/Um IM/Labbit M /RUBONG India Meghalaya Jaintia Hills 19.436 31279 0 0.0 Descent N275P15 08/20
- 156 Klarahöhle Austria Oberosterreich Sengsengebirge 19.317 31088 1581 482.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
UW 157 Weeki Wachee Spring   U.S.A. Florida Hernando 19.315 31085 407 124.1 Andrew Pitkin e-mail 10/19
- 158 Cosanostraloch-Berger-Platteneck Hoehlesystem Austria Salzburg Tennengebirge 18.887 30396 4236 1291.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 159 Trou du Garde / Creux de la Cavale France Savoie Les Deserts 18.765 30200 1066 325.0 Jean-Yves Bigot 01/16
- 160 Szepvolgyi System (Pal-volgy Cave) Hungary Budapest - 18.703 30100 404 123.0 International Journal of Speleology 44(2) 05/16
- 161 Reseau de Coufin-Chevaline France Isere Vercors 18.541 29839 1348 411.0 Jean-Yves Bigot 01/16
- 162 Nam Non System Laos - - 18.330 29500 0 0.0 Caves of Malaysia 08/19
- 163 Bettenhohle Switzerland Obwalden Kerns 18.321 29484 2638 804.0 http://ch.speleo.info 01/16
- 164 Butler-Sinking Creek System U.S.A. Virginia Bath 18.060 29065 644 196.4 Tont Canike email 09/16
- 165 Windy Mouth (Wind) Cave U.S.A. West Virginia Greenbrier 18.000 28968 200 61.0 Jim Hixson 02/89
- 166 Otscher-Höhlensystem Austria Nieberosterreich Otscher 17.776 28608 2172 662.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 167 Sistema de Tepepa (Ehecatl+Niebla) Mexico Puebla - 17.709 28500 3176 968.0 Desent 209 09/16
UW 168 Sistema Caterpillar      Mexico Quintana Roo Felipe Carrillo Puerto 17.556 28253 89 27.1 QRSS Long Caves List 07/19
- 169 Reseau de Francheville France Cote-d'Or Francheville 17.523 28200 489 149.0 Jean-Yves Bigot 01/16
  170 Fitton (Beauty) Cave U.S.A. Arkansas Newton 17.500 28164 90 95.4 Scott House e-mail 2/4
- 171 Jägerbrunntro-Höhlensystem Austria Salzburg Hagengebirge 17.415 28026 3537 1078.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 172 V5 Sistemul Varasoaia (V5-V24) Romania Bihor Mtii Bihor  17.398 28000 2142 653.0 Alex Pologea e-mal 06/20
- 173 Ogof Daren Cilau System United Kingdom Wales Powys, Monmouthshire 17.398 28000 761 232.0 www.ukcaves.co.uk/all-longest 01/16
- 174 Old Homestead Cave Australia Western Australia Nullarbor Plain 17.398 28000 0 0.0 International Caver No.7 06/17
- 175 Thornhill Cave System U.S.A. Kentucky Breckenridge 17.232 27732 0 0.0 Arron Reed Louisville Grotto e-mail 01/16
- 176 Coldwater Cave U.S.A. Iowa Winneshiek 17.005 27367 80 24.4 Larry Welch e-mail 07/16
- 177 Verborgene Höhle Austria Oberosterreich Totes Gebirge 16.825 27078 1073 327.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 178 Kingsdale Cave System United Kingdom England North Yorkshire 16.777 27000 541 165.0 www.ukcaves.co.uk/all-longest 01/16
- 179 Green Cathedral/Turtle Cave System Malaysia Sarawak Gunung Buda 16.759 26971 997 304.0 NSS News V62N8P225 08/16
UW 179 Sistema Sand Crack   (Underwater) Mexico Quintana Roo Tulum 16.619 26746 58 17.7 QRSS Long Caves List 07/19
- 180 Bigfoot Cave U.S.A. California Siskiyou 16.250 26152 1205 367.3 Scott Linn e-mail 10/16
- 181 Powell's Cave System U.S.A. Texas Menard 16.246 26145 79 24.1 Texas Speleological Survey via Jerry Atkinson e-mail 01/16
- 182 Reseau de Bunant France Haute Savoie Parmelan 16.235 26128 1188 362.0 Jean-Yves Bigot 01/16
- 183 Baradla barlang-Domica jaskyna     ?? Slovakia / Hungary Slovak / Aggtelek Karst Kecovo - Josvafo 16.196 26065 381 116.0 P.Bella - P.Gruber e-mail 02/15
- 184 Gran Sistema Cavernaio de Fuentes Cuba Pinae del Rio Sierra de Mesa 16.156 26000 0 0.0 The International Caver #8 06/17
- 185 Perdidos (sis.cavernario de los) Cuba Pinar del Rio S. del Roario 16.156 26000 0 0.0 Speleolgia 05/17
- 186 Griebkar-Höhlensystem (Platten- und Eiferkogleschacht) Austria Steiermark Totes Gebirge 16.148 25987 2087 636.0 Theo Pfarr, Robert Seebacher & Lukas Plan 10/19
- 187 Rumbling Falls Cave. U.S.A. Tennessee Van Buren 16.091 25896 474 144.5 Marion O.Smith per TCS 02/15
- 188 Reseau Jean Bernard France Haute Savoie Haute-Giffre 15.852 25512 5256 1602.0 Xavier Robert e-mail 02/18
- 189 Mystery Cave System U.S.A. Missouri Perry 15.842 25495 150 45.7 M.S.S. Walsh 02/15
- 190 Complesso del ReleccioAlfredo Bini Italy Lombardia Grigna. Settentrionale 15.780 25396 4308 1313.0 Andrea Maconi e-mail 09/17
- 191 Sistema Tibia-Fresca Spain Cantabria Porracolina 15.754 25353 1663 507.0 Jose Luis Membrado e-mail 02/15
Q 192 Krem Puri   (Sandstone) India Meghalaya Khasi Hills 15.731 25317 98 30.0 Descent N275P15 08/20
- 193 Sistema Illaminako (BU.56 - A.60) Spain Navarra Larra 15.713 25287 4396 1340.0 Jose Luis Membrado e-mail 01/21
- 194 Tjoarvekrajgge Norway Nordland Sorfold 15.638 25167 1631 497.0 Torstein Finnesand e-mail 08/16
UW 195 Sistema Nohoch Pek - Muk K'in   (Underwater) Mexico Quintana Roo Tulum 15.634 25160 61 18.6 QRSS Long Caves List 07/19
- 196 Fern Cave                           (597) U.S.A. Alabama Jackson 15.630 25154 536 163.4 Fern Cave Project 06/17
- 197 Mountain Eye Cave System          (Saltpeter) U.S.A. Tennessee Fentress 15.587 25085 280 85.3 Tenn. Cave Survey 03/87
- 198 Sistema Buso della Rana / Pisarela Italy Veneto Faedo-Casaron 15.555 25033 738 225.0 Class.del.g.piu lunghe/profon.d'Italia 06/17
- 199 Kuchlberg-Hoehlesystem (Gamskar+Felsbrü..vorl. West) Austria Salzburg Tennengebirge 15.534 25000 2087 636.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 200 Torca del Regato Calero Spain Cantabria - 15.534 25000 1148 350.0 Jose Luis Membrado e-mail 08/20
- 201 Complejo de Orbaneja del Castillo Spain Burgos               15.534 25000 0 0.0 Jose Luis Membrado e-mail 01/21
G 202 Krasnaya (Kyzyl-Toba) (Qizil Qoba) Ukraine Crimea - 15.180 24430 656 200.0 Inced O. e-mail 06/18
- 203 Gouffre Lonne-Peyret (Reseau des Arres Planeres) France Pyrenees-Atlantiques Pierre Saint Martin 15.125 24341 2648 807.0 Jean-Yves Bigot 01/16
- 204 Nunley Mtn.Cave System (Maria Angela Grotto) U.S.A. Tennessee Grundy 15.080 24269 350 106.7 David Parr per TCS 02/15
L 205 Hualalai Ranch Cave                U.S.A. Hawaii Hawaii 15.048 24217 1449 441.7 Doug Medville e-mail 03/16
- 206 DÖF-Sonnenleiter-Höhlensystem Austria Totes Gebirge Styria 15.020 24172 3583 1092.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 207 Cave Creek Cave System U.S.A. Kentucky Pulaski 15.010 24156 170 51.8 COG Squeaks 05/16
- 208 Foglepole Cave U.S.A. Illinois Monroe 15.000 24140 0 0.0 NSS News V56N4P114 04/98
- 209 Postojnska jama Slovenia Notranjska Postojnski kras 14.987 24120 377 115.0 http://www.postojnska-jama.eu/en/news/2015/postojna-cave-extended-by-3-5-kilometres/ 04/17
- 210 Almberg-Höhlensystem, Grundlseer-Berge Austria Steiermark Totes Gebirge 14.978 24105 991 302.0 Theo Pfarr, Robert Seebacher & Lukas Plan 10/19
- 211 Illyuzia-Mezhonnogo-Snezhnaya Georgia Abkhazia West Caucasus 14.963 24080 5751 1753.0 de Alexey Shelepin (jefe de expedicicion) 09/16
- 212 Clearwell Caves (Part Mine) United Kingdom England Gloucestershire 14.913 24000 351 107.0 www.ukcaves.co.uk/all-longest 01/16
- 213 Puerto Princesa Subterranean River(St.Pauls Underground River Cave) Philippines Palawan Island - 14.913 24000 328 100.0 Wikipedia 08/16
- 214 Benedicts (Persinger) Cave U.S.A. West Virginia Greenbrier 14.850 23899 254 77.4 WVASS Database 06/16
- 215 Sistema Soconusco Mexico Chiapas - 14.823 23856 1683 513.0 Taco van Leperen via Mark Minton e-mail 01/16
- 216 Torca de la Vaca - Wild Mare Spain Cantabria Entrambasaguas 14.778 23783 220 67.0 Juan Corrin e-mail 01/21
- 217 Akkado Japan Iwate - 14.726 23700 0 0.0 - 05/16
- 218 Stratenska jaskyna - Psie diery     ?? Slovakia Spissko-gemersky Slovensky raj 14.708 23670 636 194.0 www.drienka.host.sk/najdlhsie.php 01/16
- 219 jaskinia Wielka Sniezna Poland Czerwone Wierchy Malolaczniak 14.677 23620 2703 824.0 Polish Caving 2005-2009 06/16
- 220 Big Horn - Horsethief Cave System U.S.A. Wyoming / Montana Bighorn 14.615 23521 171 52.1 Even Gehring e-mail 02/15
- 221 Cueva Guerta Spain Asturias Pena Biguere 14.474 23294 0 0.0 Jose Luis Membrado e-mail 01/21
- 222 Systeme de Foussoubie France Ardeche Bas-Vivarais 14.457 23266 453 138.0 Jean-Yves Bigot 01/16
- 223 Cueva del Soplao Spain Cantabria Sierra de Arnero 14.449 23253 0 0.0 Jose Luis Membrado e-mail 10/19
- 224 Cueva Coyolat Mexico Puebla Tlacotepec 14.292 23000 2034 620.0 Gustavo e-mail AMCS#29 05/16
- 225 Complesso Fiume-Vento Italy Marche Frasassi 14.292 23000 804 245.0 http://www.Class.del.g.piulunghe/profon.d'Italia 06/17
- 226 Mini - Martin Cave - Exit Cave Australia Tasmania Ida Bay 14.292 23000 722 220.0 Sherry Juneo 06/17
- 227 Cuevas de Bellamar Cuba Matanzas - 14.292 23000 0 0.0 http://www.ecured.cu/index.php/Cuevas_de_Bellamar 10/16
- 228 Reseau de Fuilla - Canalettes France Pyrenees-Orientales Conflent 14.292 23000 0 0.0 D'apres Christophe Levillain 06/17
- 229 Rimstone River Cave U.S.A. Missouri Perry 14.200 22853 140 42.7 M.S.S. Walsh 02/15
- 230 Systeme Biolles - Squelettes - Crolleurs France Savoie Margeriaz 14.155 22781 1939 591.0 Jean-Yves Bigot 01/16
- 231 Bone - Norman Cave System U.S.A. West Virginia Greenbrier 14.118 22721 186 56.7 Bill Douty e-mail 12/97
- 232 Conjunto Sao Mateus/Imbira Brazil Goias Sao Domingos 14.062 22630 0 0.0 As Maiores Cavernas Do Basil  01/20
G 233 Kryshtaleva (Kristal'naja)      . Ukraine Ternopil Borshchiv 14.049 22610 66 20.0 cavemlynky@gmail.com  09/17
- 234 Grotta della Bigonda Italy Trentino A.A. Alt.di Asingo 14.043 22600 1476 450.0 Class.del.g.piu lunghe/profon.d'Italia 06/17
- 235 Sistema de Cubija (North Vega System) Spain Cantabria Matienzo 14.041 22596 482 147.0 Juan Corrin e-mail 06/19
- 236 Burgunderschacht, Südostmassiv Austria Oberosterreich Totes Gebirge 14.036 22588 2782 848.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 237 Grotte d'Arphidia France Pyrenees-Atlantiques Pierre Saint Martin 14.027 22575 2336 712.0 Jean-Yves Bigot 01/16
- 238 Jenolan System Australia NSW - 13.983 22503 348 106.0 Mark Sefton e-mail 07/16
- 239 Black Rock Cave Malaysia Sarawak Mulu 13.981 22500 - - Caves of Malaysia 08/19
- 240 Baishui Dong China Guizhou Jiang Kou 13.950 22450 0 0.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_rcdev50.php? 08/16
- 241 Gouffre Nebele France Pyrenees-Atlantiques Aquitaine 13.813 22230 755 230.0 Jean-Yves Bigot 01/16
UW 242 Sistema Ponderosa (Under Water & Dry) Mexico Quintana Roo Tulum 13.774 22167 93 28.4 QRSS Long Caves List 07/19
- 243 Pestera din Piriul Hodobanei   Romania Alba Mtii Bihor  13.758 22142 594 181.0 Victor Ursu info  09/16
- 244 Abisso Bueno Fonteno Italy Lombardia Fonteno 13.670 22000 0 0.0 Speleologia N68P102-103  06/16
- 245 Sistema del Hoyon de Saco(Sistema del Hoyo Grande) Spain Cantabria Porracolina 13.546 21800 1739 530.0 Clasificacion Por Desnivel 07/16
- 246 Krem Tyngheng/Diengjem India Meghalaya Jaintia Hills 13.530 21775 0 0.0 Descent 243 P33 04/17
- 247 Sistema del Rio Encantado Puerto Rico - Florida,Ciales,Manati 13.527 21770 1129 344.0 Mark Minton e-mail 06/16
- 248 Krem KotSati/Um Lawan India Meghalaya Jaintia Hills 13.378 21530 705 215.0 Indian Sub Coninent Longest/Deepest Limestone Caves 3/13 03/16
- 249 Groaning Cave U.S.A. Colorado Garfield 13.270 21356 149 45.4 Derek Bristol e-mail 08/16
- 250 Big Bat Cave U.S.A. Kentucky Breckenridge 13.250 21324 0 0.0 Steve Gentry e-mail 06/16
- 251 Jaskyna Mrtvych netopierov     ?? Slovakia Nizke Tatry Dumbier 13.075 21042 1063 324.0 www.drienka.host.sk/najdlhsie.php 01/99
- 252 Pha Soung   (Tham Hay) Laos Khammouane Ban Phondou 13.056 21012 233 71.0 Liviu Valenas e-mail 04/19
- 253 Pleasant Ridge Cave U.S.A. Tennessee Cannon 13.055 21011 340 103.6 Hal Love e-mail 02/20
- 254 Abisso Paolo Roversi Italy Toscana Alpi Apuane 13.049 21000 4429 1350.0 Andrea Maconi e-mail 07/16
- 255 Reseau des Grottes aux Fees Switzerland Vallorbe Vaud 13.049 21000 745 227.0 http://ch.speleo.info 01/16
- 256 Perte de Massar France Aveyron Causse de Limogne 13.049 21000 394 120.0 Claude Milhas 01/16
L 257 Emesine Cave (1881 System)         U.S.A. Hawaii Hawaii 12.890 20744 1433 436.8 Don Coons e-mail 03/16
- 258 Cloud Cave - Cobra Cave - Bridge System Malaysia Sarawak Mulu 12.820 20632 1083 330.0 Mulu Caves Project 08/19
- 259 Mystery Cave System U.S.A. Minnesota Fillmore 12.790 20584 101 30.8 Minnesota Speleology 08/87
- 260 Pielklieng-Sielkan Pouk river cave India Meghalaya Jaintia Hills 12.752 20522 0 0.0 Descent N275P15 05/17
- 261 Selminum Tem Papua New Guinea Western Prov. Hindenburg Rng 12.738 20500 449 137.0 B.C.R.A. Bulletin 05/17
- 262 Pestera Topolnita (Sistemul Topolnita-Epuran) Romania Mehedinti Podisul Mehedinti 12.738 20500 417 127.0 International Caver #11 06/17
- 263 Anvil Cave                           (279) U.S.A. Alabama Morgan 12.667 20386 51 15.5 Alabama Cave Survey 04/80
- 264 Castleguard Cave Canada Alberta Rocky Mountain 12.649 20357 1260 384.0 List of Caves in Canada 03/20
- 265 Gradys (Mammoth River) Cave System U.S.A. Kentucky Hart 12.600 20278 120 36.6 Carbide Caver V7I9P111 10/98
- 266 Sistemul Ciur - Ponor - Toplita de Rosia Romania Bihor Mtii Padurea Craiului 12.521 20150 748 228.0 Victor Ursu e-mal 01/16
- 267 Cave system of Crnelsko brezno  Slovenia Julian Alps Rombonski Podi 12.468 20066 4570 1393.0 Peter Svete e-mail 03/20
- 268 Aven Noir France Aveyron Grands Causses 12.427 20000 351 107.0 info FFS 01/16
- 269 Interessante Höhle Austria Salzburg Hagengebirge 12.375 19916 2881 878.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 270 Dry Cave U.S.A. New Mexico Eddy 12.222 19669 279 85.0 Stan Allison via Pete 03/16
- 271 SchrattenHoehle Switzerland Obwalden Kerns 12.207 19645 1880 573.0 http://ch.speleo.info 06/16
- 272 Ellisons Cave U.S.A. Georgia Walker 12.127 19517 1063 324.0 Georgia Underground V24N1 03/87
- 273 Lingshandong China Guizhou Zhengan 11.993 19301 1591 485.0 Long Caves in China by Erin Lynch 01/16
- 274 Torca de los Corrales del Trillo (Sistema Pena del Trillo-La Tramasquera) Spain Cantabria / Burgos - 11.992 19300 1430 436.0 Clasificacion Por Desnivel 07/16
- 275 Wit Tamdoun Morocco Agadir Immouzer 11.886 19128 0 0.0 Caves & Caving I84 Sum99
- 276 Riesending-Schachthohle Germany Bavaria Untersgberg Mtns. 11.868 19100 3766 1148.0 Thomas Matthalm e-mail 02/15
- 277 Sistema del Faro-Isla de Mona Puerto Rico Isla de Mona Mayaguez 11.868 19100 118 36.0 Marc Ohms e-mail 04/17
- 278 Grotte de Neuvon France Cote-d'Or Plom.-les-Dij. 11.868 19100 115 35.0 Spelunca #56 06/17
- 279 Feihu Dong China Hunan Longshan 11.806 19000 1115 340.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_gro.php?op=deve 2/15
- 280 Red de Toneyo Spain Asturias Macizo del Cornion 11.787 18970 2014 614.0 List of Spains Longest & Deepest (WWW) 04/98
- 281 Hang khe Rhy Vietnam Quang Binh - 11.756 18920 394 120.0 Peter MacNab e-mail 07/16
UW 282 Cathedral-Falmouth System        U.S.A. Florida Suwannee 11.740 18894 190 57.9 Casey McKinlay e-mail 03/20
- 283 Reseau Fanges - Paradet France Pyrenees-Orientales Fenouilledes 11.702 18832 984 300.0 Bernard Ournie e-mail 09/16
- 284 Cueva del Hoyo Salcedillo Spain Cantabria Porracolina 11.682 18800 1745 532.0 Jose Luis Membrado e-mail 02/15
- 285 Russell Cave   (N.M.)        (169) U.S.A. Alabama Jackson 11.605 18676 406 123.7 Jason Richards   11/17
- 286 Sistema sima GESM - sima de la Luna Spain Malaga Tolox 11.593 18657 3474 1059.0 Jose Luis Membrado e-mail 11/17
- 287 Wells Cave U.S.A. Kentucky Pulaski 11.496 18501 0 0.0 NSS News V57N10P308 10/99
- 288 Complesso Mutera - Fantozzi Italy Piemonte Ormea 11.435 18403 0 0.0 Speleologia N68P102-103  06/16
- 289 Rhar Bou Ma'za (Tafna River Cave) Algeria Tilimsen Tilimsen Range 11.433 18400 0 0.0 Atlas - Great Caves of the World 06/17
UW 290 Beacon Woods - Waynes World System (School Sink)               U.S.A. Florida Pasco 11.364 18289 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab 06/16
- 291 Krem UmTHLOO-SYNRANG Labbit India Meghalaya Jaintia Hills 11.330 18234 617 188.0 Descent N275P15 03/16
- 292 Luweng Jaran System Indonesia Java Timur Pacitan 11.309 18200 394 120.0 Caves of Malaysia 08/19
- 293 Duhlata (D(a)(ou)hklata) Bulgaria - Pernik 11.309 18200 230 70.0 Caves of Bulgaria 07/16
Q 294 Cueva del Saman Venezuela Edo Zulia Fundo las Pis. 11.309 18200 0 0.0 Franco Urbani 06/17
- 295 Pestera de la Izvorul Tausoare Romania Bistrita-Nasaud Mtii Rodnei  11.251 18107 1512 461.0 Victor Ursu e-mal 01/16
- 296 Ambatoharanana Madagascar Ambilobe Ankarana 11.247 18100 - - Atlas - Great Caves of the world 06/17
- 297 Cueva de Mairuelegorreta Spain Araba Gorbea 11.239 18088 0 0.0 Jose Luis Membrado e-mail 08/18
- 298 Crumps Spring Cave U.S.A. Kentucky Hart 11.200 18025 140 42.7 Ronnie Harrison e-mail 03/19
- 299 Grotte de Gournier France Isere Vercors 11.185 18000 2231 680.0 The International Caver #21P41 06/17
- 300 Goochland - Poplar Cave Complex U.S.A. Kentucky Rockcastle 11.180 17992 0 0.0 Kentucky Speleo-Fest Guidebook 06/16
- 301 Stefanova Slovakia Nizke Tatry Demanovske vrchy 11.173 17981 423 129.0 Pavel Herich e-mail 2/21
Q 302 Charles Brewer Cave System   (Quartzite) Venezuela Bolivar Churi Tepui 11.060 17800 361 110.0 Venezuelan tepuis-their caves and biota 02/18
- 303 Tanne aux Cochons - Tanne Froide France Savoie margeriaz 10.995 17694 2700 823.0 Jean-Yves Bigot 01/16
- 304 Chu Yan (Xiniu) Dong China Guizhou An Long 10.936 17600 1165 355.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_rcdev50.php? 06/17
- 305 Peak/Speedwell System (part mine) United Kingdom England Derbyshire 10.930 17590 814 248.0 www.ukcaves.co.uk/all-longest 01/16
UW 306 Sistema Nohoch Kai    Mexico Quintana Roo Tulum 10.873 17499 85 25.9 QRSS Long Caves List 07/19
- 307 Sistema de Partacua Spain Huesca Pirineos 10.829 17427 2707 825.0 Jose Luis Membrado e-mail 08/18
- 308 Aven du Sotch de la Tride France Aveyron Grands Causses 10.812 17400 1122 342.0 Liste Drouin 06/17
- 309 Grotta del Bue Marino Italy Sardinia Dorgali 10.812 17400 0 0.0 Speleologia N68P102-103  06/16
L 310 Kona Mala Cave U.S.A. Hawaii Hawaii 10.775 17341 185 56.5  Tomislav Gracanin files 1/14
- 311 Duobing Dong China Guizhou Xiuwen/Xifeng 10.694 17210 0 0.0 http://www.grottes-et-karsts-de-chine.org/npds/gkc_rcdev50.php? 102/2015
- 312 Sistema la Verdilluenga Spain Asturias Picos de Europa 10.685 17196 2969 905.0 Jose Luis Membrado e-mail 11/17
- 313 Tham Chom Ong System Laos Xai Oudoaxay 10.657 17150 0 0.0 Eurospeleo Magazine N2P66 07/17
- 314 Conjunto Santa Rita Brazil Iraquara Bahia 10.594 17050 0 0.0 As Maiores Cavernas Do Basil  01/20
L 315 Cueva del Viento-cueva del Sobrado  Spain Canarias Island Tenerife Is. 10.583 17032 1837 560.0 Grupo de Espeleologia Tebexcorade 04/17
- 316 Cueva Tonio - Cayueia Spain Cantabria Porracolina 10.566 17005 1729 527.0 Jose Luis Membrado e-mail 09/19
- 317 Neide - Muruk Cave Papua New Guinea New Britain Galowe Plateau 10.563 17000 4127 1258.0 Deep Cave List by Philippe Drouin 02/15
- 318 Petroglyph Cave (part of the Caves Branch S.) Belize - - 10.563 17000 0 0.0 Tom Miller e-mail 01/16
- 319 Reseau du Rupt du Puits France Meuse Barrois 10.563 17000 0 0.0 D'apres Stephane Jaillet 06/17
- 320 Katalehkhor Cave Iran Zanjan - 10.563 17000 0 0.0 - 10/16
- 321 Complesso Ispinigoli - S.Giovanni Su Anzu-Nurachi Italy Sardinia Dorgali 10.563 17000 0 0.0 Speleologia N68P102-103  06/16
- 322 Portal-BoarHole System U.S.A. West Virginia Greenbrier 10.466 16843 333 101.5 WVASS Database 02/15
UW 323 Cenote Zapote                    Mexico Quintana Roo Tulum 10.419 16768 92 28.0 QRSS Long Caves List 07/19
- 324 Aven de la Leicasse France Herault Grands Causses 10.271 16530 1168 356.0 Jean-Yves Bigot 01/16
- 325 Lazareva Cave Serbia Central Serbia Bor 10.260 16512 354 108.0 Robert Misic 10/20
- 326 Lapa Doce ll Brazil Iraquara Bahia 10.253 16500 0 0.0 As Maiores Cavernas Do Basil  01/20
- 327 James (Thousand Domes) Cave U.S.A. Kentucky Edmonson 10.250 16496 0 0.0 Glenn Merrill 07/84
- 328 Reseau de la Couze (Correze) France Correze Causse de Martel 10.207 16426 338 103.0 Thierry Apriland via Yvonne e-mail 01/16
- 329 Sistema Roraima Sur Venezuela - - 10.190 16400 0 0.0 2009 NSS/ICS Kerrville Texas 07/16
- 330 Sustav Dulin ponor - Medvedica Croatia Hrvatska Ogulin 10.188 16396 0 0.0 http://public.srce.hr/speleo/karta.html 06/17
- 331 Gruta do Padre Brazil Bahia Santana 10.184 16390 0 0.0 As Maiores Cavernas Do Basil  01/20
- 332 Lapa São Vicente l Brazil Goias Sao Domingos 10.184 16390 0 0.0 As Maiores Cavernas Do Basil  01/20
- 333 Pestera din Valea Rea Romania Bihor Mtii Bihor  10.164 16357 1220 372.0 Victor Ursu e-mal 01/16
UW 334 Sistema Doggi     Mexico Quintana Roo Felipe Carrillo Puerto 10.133 16308 51 15.5 QRSS Long Caves List 07/19
- 335 Tham Kon Nam/Tham Hang Phung/Tham Luong Laos Boualapha Khammouane 10.128 16300 164 50.0 Peter MacNab FB 06/20
G 336 Sistema Kulogorskaya-Troya              .   Russia Arkhangelsk Pinega 10.096 16248 59 18.0 Karst and cave Pinega's   -  Victor Malkov, Evgeny Gurkalo 06/16
Q 337 Ojos Cristal Cave System (Crystal Eyes)   (Quartzite) Venezuela Bolivar Roraima Tepui 10.029 16140 240 73.0 Venezuelan tepuis-their caves and biota 02/18
- 338 Vinegar Ridge (Buckingham Palace) Cave U.S.A. Kentucky Hart 10.000 16093 211 64.3 Ronnie Harrison e-mail 03/19
- 339 Hidden River Cave U.S.A. Kentucky Hart 10.000 16093 0 0.0 Dave Foster e-mail 02/18
- 340 Perkins Cave U.S.A. Virginia Washington 9.997 16089 300 91.4 Virginia Speleological Survey 06/16
- 341 Krubera (Voronja) Cave Georgia Abkhazia West Caucasus 9.978 16058 7208 2197.0 FB 09/20
- 342 Gouffre de Cabrespine (lo Gaugnas) France Aude Montagne Noire 9.978 16058 804 245.0 Jean-Yves Bigot 01/16
L 343 Pahoa Cave(s) (segmentation??)     U.S.A. Hawaii Hawaii 9.942 16000 1150 350.5 Dr. Stephen Smith reports that this cave could be as short as about 2 miles long now, due to plugging and segmentation by the 2018 Kilauea 61g lava flows. 05/16
- 344 Complesso Cappa-18-Denver-Straldi Italy Piemonte Briga Alta 9.942 16000 2559 780.0 Speleologia N68P102-103  06/16
- 345 Dan yr Ogof United Kingdom Wales Powys 9.942 16000 492 150.0 www.ukcaves.co.uk/all-longest 01/16
- 346 Poulnagollum - Poulelva Ireland Co.Clare - 9.942 16000 459 140.0 www.ukcaves.co.uk/all-longest -
- 347 Igues de Goudou - Lacarriere France Lot Causse de Gramat 9.942 16000 394 120.0 Jean-Yves Bigot 01/16
- 348 Snail Shell Cave System U.S.A. Tennessee Rutherford 9.926 15974 144 43.9 Jeff Sims 07/86
- 349 Dunbar Cave - Roy Woodard System  (Saltpeter) U.S.A. Tennessee Montgomery 9.850 15852 119 36.3 Tony Groves e-mail 09/16
- 350 Woising-Höhlensystem Austria Steiermark Totes Gebirge 9.791 15757 1253 382.0 Theo Pfarr, Robert Seebacher & Lukas Plan 10/19
UW 351 Entrada Caapechen  (Cenote Manatee)         Mexico Quintana Roo Tulum 9.717 15638 92 28.0 QRSS Long Caves List 07/19
- 352 Sullivan Cave U.S.A. Indiana Lawrence 9.632 15501 105 32.0 Long cave list for Indiana, Indiana Cave Survey 03/17
- 353 Borne aux Cassots France Jura Nevy-sur-Seile 9.631 15500 472 144.0 Jean-Yves Bigot 01/16
- 354 Big Bone Cave                     (Saltpeter) U.S.A. Tennessee Van Buren 9.627 15493 226 68.9 John Smyre 06/84
UW 355 Springs Cave, Jackson Blue       U.S.A. Florida Jackson 9.591 15436 100 30.5 Ben Martinez e-mail 04/18
- 356 Diros Cave Greece Peloponnese Laconia 9.569 15400 0 0.0 www.selas.org 10/16
- 357 Leandras Cave U.S.A. Arizona Coconino 9.547 15364 378 115.2 map at park Headquarters via Greg e-mail 06/16
- 358 Sistema de las Bernias Spain Burgos Lunada 9.532 15340 906 276.0 Clasificacion Por Desnivel 07/16
- 359 Hang Vom Vietnam Quang Binh - 9.513 15310 0 0.0 Peter MacNab e-mail 07/16
- 360 Boqueirão Brazil Bahia Carinhanha 9.470 15240 0 0.0 As Maiores Cavernas Do Basil  01/20
- 361 Cueva de Alpazat Mexico Puebla - 9.445 15200 0 0.0 http://www.amcs-pubs.org/longanddeep.html 01/16
- 362 Kacna Cave (System) Slovenia Divaski Karst - 9.433 15181 919 280.0 Longest & Deepest Caves of Slovenia 04/17
- 363 Tham Xe Bang Fai Laos - - 9.432 15180 0 0.0 Caves of Malaysia 08/19
- 364 Blowhole (Nichols) Cave U.S.A. Tennessee Cannon 9.425 15168 172 52.4 Derek Wolfe e-mail 02/20
- 365 Ariadne Cave System Hungary Pest megye Pilis mountain 9.383 15100 669 204.0 www.ariadneegyesulet.hu 07/16
- 366 Sof Omar Holluca Ethiopia Bale Ityopya 9.383 15100 49 15.0 Atlas - Great Caves of the World 06/17
- 367 Megamania Cave New Zealand   Heaphy Valley 9.325 15007 - - Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 368 Vishnevsky Cave Uzbekistan Surkhandarya Chul-Bair 9.321 15000 4213 1284.0 Olaf Kähler e-mail 01/20
- 369 Complesso Omber en Banda al Bus del Zel-791 Italy Lombardia Cariadeghe 9.321 15000 1411 430.0 http://www.Class.del.g.piulunghe/profon.d'Italia 06/17
- 370 Reseau de Malissard France Isere / Savoie Chartreuse 9.321 15000 1362 415.0 Jean-Yves Bigot 01/16
- 371 Altherrenlabyrinth Austria Salzburg Tennengebirge 9.321 15000 1296 395.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 372 Grotte de la Cigalere France Ariege Pyrenees 9.321 15000 748 228.0 Spelunca #56 (Not on the TIC List) 06/17
- 373 Skydusky Hollow Cave System (Newberry - Bane - Buddy Penley's Cave) U.S.A. Virginia Bland 9.321 15000 380 115.8 Nick Socky e-mail 09/20
- 374 Sistema Constantino Cuba Pinar del Rio - 9.321 15000 0 0.0 WLCL -
- 375 Gratta Su Bentu - Sa Oche Italy Sardinia Nuoro 9.321 15000 0 0.0 http://www.Class.del.g.piulunghe/profon.d'Italia 06/17
- 376 Cueva de la Lastrilla Spain Cantabria - 9.321 15000 0 0.0 Clasificacion Por Desnivel 07/16
- 377 Sima del Aire Spain Malaga Sierra de las Nieves 9.293 14956 2470 753.0 Jose Luis Membrado e-mail 11/17
- 378 Ozto J2 Mexico Oaxaca Cuicatlan 9.221 14840 4032 1229.0 Mark Minton e-mail 01/16
- 379 Cueva del Lobo Spain Cantabria - 9.184 14780 932 284.0 Jose Luis Membrado e-mail 01/16
- 380 Ludingtons Cave U.S.A. West Virginia Greenbrier 9.140 14709 250 76.2 Joseph Caldwell l 01/16
- 381 Hochscharten-Höhlensystem Austria Salzburg Hoher Goll 9.114 14668 4573 1394.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 382 Wyandotte Cave U.S.A. Indiana Crawford 9.100 14645 256 78.0 Long cave list for Indiana, Indiana Cave Survey 03/17
- 383 Complejo Piscarciano-Vacas-Arenas Spain Burgos Haz de Arreba 9.098 14642 0 0.0 Jose Luis Membrado e-mail 2/21
UW 384 Cova de sa Gleda - Camp des Pou.    Spain Balearics Manacor 9.084 14620 82 25.0 Jose Luis Membrado e-mail 3/21
- 385 Systeme de Sauvas-Cocaliere France Ardeche Bas-Vivarais 9.010 14500 292 89.0 Jean-Yves Bigot 01/16
- 386 Duncan Field System U.S.A. Oklahoma Adair 8.920 14355 124 37.8 Keith (Andy) Harris e-mail 04/17
- 387 Boj-Bulok Uzbekistan Uzbekistan Gissaro-Alay 8.867 14270 4642 1415.0 sgs.erl.e-burg.su/~sigalov/clist.html 02/97
UW 388 Sistema Murena - Aak Kimin Mexico Quintana Roo Tulum 8.866 14269 225 68.6 QRSS Long Caves List 07/19
UW 389 Sistema Dos Pisos              Mexico Quintana Roo Tulum 8.809 14176 80 24.4 QRSS Long Caves List 07/19
- 390 gruta de Almonda Portugal - - 8.699 14000 - - Eric Madelanine list 07/06
- 391 Labassa Italy - - 8.699 14000 1988 606.0 Eric Madelanine list 07/06
- 392 Apocalypse Pothole South Africa - - 8.699 14000 279 85 Eric Madelanine list 07/06
- 393 Complejo Gesarribe Spain Guipuzkoa Oñati 8.699 14000 0 0.0 Jose Luis Membrado e-mail 2/21
- 394 K2, Hohgant Switzerland Bern Habkern 8.697 13996 2431 741.0 http://ch.speleo.info 06/16
- 395 Webster Cave Complex U.S.A. Kentucky Breckenridge 8.682 13972 0 0.0 Ben Tobin WCCSG e-mail 06/16
- 396 Kimble Pit U.S.A. West Virginia Pendleton 8.640 13905 429 130.8 GVKS 01/20
- 397 Cassell Cave System U.S.A. West Virginia Pocohontas 8.620 13873 140 42.7 Gangsta Mappers 10/17
- 398 Thompson Valley Cave System (Corkscrew Cave) U.S.A. Virginia Tazewell 8.600 13841 604 184.0 VSS 11/19
- 399 Rice Cave                         (Saltpeter) U.S.A. Tennessee Van Buren 8.590 13824 210 64.0 Tenn.Cave Survey 02/15
- 400 Yorkshire Pot  Canada - - 8.582 13812 1276 389.0 Eric Madelanine list 07/06
- 401 Tham Phra Wang Daeng Thailand     8.568 13789 0 0.0 Caves of Malaysia 08/19
UW 402 Pozo Azul Spain Burgos Covanera 8.547 13755 0 0.0 Jose Luis Membrado e-mail 3/21
- 403 AIXA-Ibarrengo Spain Guipuzkoa Itziar 8.546 13754 0 0.0 Jose Luis Membrado e-mail 2/21
- 404 Anjohy Kibojenjy Madagascar Bemaraha Bekopaka 8.523 13717 - - Atlas of the Great Caves and Karst of Africa Part 1 P164 6/17
- 405 HH Cave (Honeycomb Hill) New Zealand South Island Mt Arthur 8.520 13712 2365 721.0 Lindsay Main NZ Speleological Soc. Info Officer 11/19
- 406 Torca de la Llana de la Len Spain Cantabria Porracolina 8.453 13603 0 0.0 Jose Luis Membrado e-mail 2/21
- 407 Acme Quarry Cave System U.S.A. West Virginia Greenbrier 8.451 13601 241 73.5 Ron Fulcher e-mail 07/16
- 408 Cueva del Nacimiento Spain Cantabria Picos de Europa 8.421 13553 0 0.0 Jose Luis Membrado e-mail 2/21
C  409 Cova Cuberes     (Conglomerate) Spain Catalonia Pallars Jussa 8.397 13513 1076 328.0 Jordi Lloret-Prieto e-mail 03/16
- 410 Complesso di Conca delle Carsene Italy - - 8.389 13500 2490 759.0 www.sop.inria.fr/agos-sophia/sis/DB/ 04/17
- 411 Stagebarn Crystal Cave U.S.A. South Dakota Meade 8.356 13448 326 99.4 Derek Wolfe e-mail 3/21
UW 412 Sistema Camilo                 Mexico Quintana Roo Tulum 8.352 13442 82 25.0 QRSS Long Caves List 07/19
- 413 Orlova Chouka Bulgaria - - 8.349 13437 39 12.0 Eric Madelanine list 07/06
- 414 Cueva de la Cullalvera Spain Cantabria Ramales de la Victoria 8.326 13400 0 0.0 Jose Luis Membrado e-mail 2/21
- 415 Tham Thon-Tham Houey Sam Boun Laos - - 8.264 13300 0 0.0 Caves of Malaysia 08/19
UW 416 Sistema Sac Kai (Paachi Nah) Mexico Quintana Roo Tulum 8.208 13209 51 15.5 QRSS Long Caves List 07/19
- 417 Corra-Lynn Australia - - 8.202 13200 125 38.0 Eric Madelanine list 07/06
- 418 Bowman's Pit - Skert Well U.S.A. Kentucky Wayne 8.200 13197 226 68.9 Lee Florea e-mail 07/19
C  419 Longmen Dong  (Conglomerate) China Sichuan Yaan 8.196 13190 1168 356.0 www.hongmeigui.net/deepandlong.php 04/17
- 420 Cuyler Cave U.S.A. Tennessee Sevier 8.160 13132 300 91.4 Steve Pierce 07/86
- 421 Gutschtobelhöhle Switzerland - - 8.140 13100 2064 629.0 Eric Madelanine list 07/06
- 422 Sistema Yaxchen East Mexico - - 8.134 13090 0 0.0 Eric Madelanine list 07/06
- 423 Sustav Panjkov Ponor - Varicakova Croatia - - 8.110 13052 0 0.0 The Biggest Croatian cave list 05/17
- 424 Predjamski sistem Slovenia - - 8.105 13044 623 190.0 Eric Madelanine list 07/06
- 425 Wolf River (Jaguar) Cave          (Saltpeter) U.S.A. Tennessee Fentress 8.104 13042 221 67.4 Kristen Bobo e-mail 10/16
- 426 Sistema de Pozalaqgua Spain Burgos/Araba Sierra Salvada  8.100 13036 0 0.0 Jose Luis Membrado e-mail 2/21
- 427 Climax Cave U.S.A. Georgia Decatur 8.100 13036 80 24.4 Map 05/16
  428 Blanchard Springs Cave U.S.A. Arkansas Stone 8.100 13036 90 0.0 Dave Bunnell 5/1
- 429 Gouffre Mirolda / Lucien Bouclier France Haute Savoie Samoens 8.078 13000 5335 1626.0 http://www.secja.com/desniv.htm     Depth of 1733 reported 05/16
- 430 Dark Star Uzbekistan - - 8.078 13000 2953 939.0 Olaf Kähler e-mail 01/20
- 431 Complesso (Sotterranceo) del Col Delle Erbe Italy Friuli VG Canin Massif 8.078 13000 3068 935.0 http://www.Class.del.g.piulunghe/profon.d'Italia 06/17
- 432 Festival'naya-Ledopadnaya Uzbekistan - - 8.078 13000 2051 625.0 Eric Madelanine list 07/06
- 433 Cueva del Rio La Venta Mexico - - 8.078 13000 1411 430.0 Eric Madelanine list 07/06
- 433 Aven de la Combe Rajeau France - - 8.078 13000 771 235.0 Eric Madelanine list 07/06
- 434 Slaughter Stream Cave United Kingdom South Wales - 8.078 13000 328 100.0 Eric Madelanine list 07/06
- 435 Sistema de Joblegòn Spain Cantabria Reocin 8.078 13000 0 0.0 Jose Luis Membrado e-mail 2/21
- 436 Powder Mill Creek Cave U.S.A. Missouri Shannon 8.047 12950 103 31.4 M.S.S. Baker 02/15
- 437 Res. Median du clos d'Aspres France - - 8.047 12950 2346 715.0 Eric Madelanine list 07/06
- 438 Falls Cave U.S.A. Arizona Coconino 7.910 12730 192 58.5 Jason Ballenski e-mail 12/16
- 439 Tham Mae Lana Thailand     7.904 12720 0 0.0 Caves of Malaysia 08/19
- 440 Sulfur Mountain System U.S.A. Kentucky Wayne 7.900 12714 312 95.2 Lee Florea on FB 01/19
- 441 Unthanks Cave U.S.A. Virginia Lee 7.900 12714 211 64.3 2009 NSS/ICS Kerrville Texas 07/16
- 442 Grassy Cove Saltpetre Cave        (Saltpeter) U.S.A. Tennessee Cumberland 7.893 12703 367 111.9 Deep Caves of TAG, John Stembel 10/16
- 443 Veryovkina Georgia Abkhazia Arabika massive 7.891 12700 7257 2212.0 FB 09/20
UW 444 Old Bellamy (Derekson)(Santa Fe River Rise) Cave Sys.  U.S.A. Florida Alachua 7.865 12657 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab 06/16
- 445 Great EX(pectations) Cave U.S.A. Wyoming Washakie 7.854 12640 1408 429.2 NSS News V44N6 (Peter Shifflett) 06/86
- 446 Lee Cave U.S.A. Kentucky Edmonson 7.817 12580 0 0.0 CRF 08/87
- 447 Overholts Blowing Cave U.S.A. West Virginia Pocahontas 7.811 12571 666 203.0 Gary Storrick 01/16
- 448 Whistling Cave U.S.A. Indiana Lawrence 7.810 12569 0 0.0 Long cave list for Indiana, Indiana Cave Survey 03/17
- 449 Camps Gulf Cave                   (Saltpeter) U.S.A. Tennessee Van Buren 7.807 12564 368 112.2 Deep Caves of TAG, John Stembel 10/16
- 450 Combe des Bioles - Tanne des Squelettes France - - 7.767 12500 1847 563.0 Eric Madelanine list 07/06
UW 451 Sistema Pandora Mexico Quintana Roo Tulum 7.730 12441 74 22.6 QRSS Long Caves List 07/19
- 452 Stompbottom Cave U.S.A. Virginia Tazewell 7.730 12440 319 97.2 VSS Long Cave List 02/15
- 453 Pàl-Völgy Hungary - - 7.705 12400 341 104.0 Eric Madelanine list 07/06
- 454 Sistema Cueva'l Trumbiu - Pozu Haciosu Spain Asturias Picos de Europa 7.705 12400 0 0.0 Jose Luis Membrado e-mail 2/21
- 455 Muskinja - Panjkova spilja system Croatia - - 7.696 12385 0 0.0 Eric Madelanine list 07/06
- 456 Rudickê propadani Czech Rep. - - 7.643 12300 591 180.0 Eric Madelanine list 07/06
- 457 Sistema Torca de los Morteros Spain Burgos Espinosa de los Monteros 7.643 12300 0 0.0 Jose Luis Membrado e-mail 2/21
- 458 Wildbaderhöhle, Südostmassiv Austria Steiermark Totes Gebirge 7.625 12272 3543 1080.0 Web 08/20
- 459 Gua Salukkan Kallang Indonesia - - 7.618 12260 0 0.0 Caves of Malaysia 08/19
- 460 Atlixicaya Mexico - - 7.581 12200 - - Eric Madelanine list 07/06
- 461 Gardner's Gut New Zealand - - 7.579 12197 - - Eric Madelanine list 07/06
- 462 Haws Spring Cave U.S.A. Tennessee Cannon 7.576 12192 150 45.7 TCS 01/96
- 463 Sistema del Jou la Canal Parda - Canaiòn de los Desvios Spain Asturias Picos de Europa 7.530 12119 2963 903.0 Jose Luis Membrado e-mail 08/20
- 464 Sistema del Alto Bueras Spain Cantabria Voto 7.504 12076 0 0.0 Jose Luis Membrado e-mail 2/21
- 465 Long Hollow (Dyke's/Mud-&-Slime) Cave System U.S.A. Kentucky Pulaski 7.497 12065 235 71.6 Mark Turner e-mail 11/98
- 466 Sniezna Studnia Poland - - 7.488 12050 2503 763.0 Polish Caving 2005-2009 06/16
- 467 Sistemul Zapodie - Pestera Neagra Romania Bihor Mtii Bihor  7.486 12048 584 178.0 Victor Ursu e-mal 01/16
- 468 Andriafiabe Madagascar Ambilobe Ankarana 7.475 12030 0 0.0 Eric Madelanine list 07/06
- 469 Helictite Cave U.S.A. Virginia Highland 7.458 12002 206 62.7 Nathan Farrar e-mail 01/18
- 470 Gua gereja hijan - Lubang Panghuni Pantai Malaysia - - 7.456 12000 - - Eric Madelanine list 07/06
- 471 Cueva Pitch Mexico - - 7.456 12000 - - Eric Madelanine list 07/06
- 472 Grotta della Mottera Italy - - 7.456 12000 2034 620.0 Eric Madelanine list 07/06
- 473 Windlocher-Klingertalschacht Austria Salzburg Untersberg 7.456 12000 1348 411.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 474 reseau de Lavayssiere France - - 7.456 12000 0 0.0 Eric Madelanine list 07/06
- 475 Mala Boka - BC4 System Slovenia Julian Alps Bovska Kotlina 7.379 11875 4327 1319.0 Marko Erker e-mail 04/20
- 476 Renejevo brezno Slovenia Julian Alps Kaninski podi 7.372 11864 4337 1322.0 Matic Di Batista e-mail 08/20
UW 477 Lineater (Stevenson Spring)    U.S.A. Florida Hamilton 7.326 11790 180 54.9 Andy Pitkin FB 10/19
L 478 Bilemot Gul                        South Korea Isla Cheju - 7.300 11749 - - Chris Llyod - Cavers Digest 04/99
- 479 Bilemot Kul South Korea Cheju Island - 7.300 11749 804 245.0 On  Lava Caves in Japan and Vivinity 10/88
- 480 Paxtons Cave U.S.A. Virginia Alleghany 7.260 11684 71 21.6 VSS Long Cave List 02/15
UW 481 Luraville / Telford System                U.S.A. Florida Suwanee 7.241 11653 72 21.9 Andy Higgie e-mail 02/18
- 482 Lisanby Cave U.S.A. Kentucky Caldwell 7.220 11619 0 0.0 Mike Dyas 06/89
- 483 Dry Cave U.S.A. West Virginia Greenbrier 7.206 11597 314 95.7 WVACS 03/20
UW 484 Peacock Cave I-II System         U.S.A. Florida Suwanee 7.200 11587 210 64.0 Richard Blackburn e-mail 06/16
UW 485 Cueva Quebrada         Mexico Quintana Roo Tulum 7.180 11555 31 9.4 QRSS Long Caves List 07/19
- 486 Farmers System - 1 U.S.A. Kentucky Pulaski 7.179 11553 202 61.6 Darrell Adkins e-mail 01/16
- 487 Grayson Gunnar Cave U.S.A. Kentucky Wayne 7.160 11523 180 54.9 2009 NSS/ICS Kerrville Texas 07/16
- 488 Höhle beim Spannagelhaus Austria Tirol Zillertaler Alpen 7.146 11500 1079 329.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19
- 489 Blackfathom River Cave System U.S.A. Missouri Ste.Genevieve 7.110 11442 213 64.9 Chad McCain e-mail 03/18
- 490 McFail's Cave U.S.A. New York Schoharie 7.091 11412 295 89.9 Simeon Warner e-mail 08/16
UW 491 Entrada Boca Paila                    Mexico Quintana Roo Tulum 7.085 11402 88 26.8 QRSS Long Caves List 02/20
- 492 Cyclops Cave U.S.A. Virginia Russell 7.080 11394 424 129.2 J.Christie e-mail 06/16
UW 493 Sistema MOAC Mexico Quintana Roo Tulum 7.065 11369 46 14.0 QRSS Long Caves List 07/19
- 494 Zarathustra Cave                  (Saltpeter) U.S.A. Tennessee Fentress 7.030 11314 60 18.3 Bill Dean 07/86
UW 495 Manantial del Toro Dominican Republic La Altagracia Boca de Yuma 7.003 11270 62 19.0 Olivier Testa e-mail 11/20
UW 496 Sistema Cupul Ha     (Underwater+Dry) Mexico Quintana Roo Tulum 6.930 11152 46 14.0 QRSS Long Caves List 07/19
- 497 Pestera Sura Mare Romania Hnedoara Mtii Sebesului  6.912 11123 1394 425.0 Victor Ursu e-mal 01/16
UW 498 Sistema Chac Mol     (Underwater+Dry)        Mexico Quintana Roo Tulum 6.902 11108 93 28.3 QRSS Long Caves List 07/19
- 499 Grotte des Eaux Chaudes France Pyrenees-Atlantiques Pic de Ger 6.835 11000 2657 810.0 Jean-Yves Bigot 01/16
- 500 Hollock Austria D(Bayern)Vorariberg Allgauer Alpen 6.835 11000 1483 452.0 Theo Pfarr, Robert Seebacher & Lukas Plan 01/19