| WORLD LONGEST UNDERWATER CAVES Compiled by: Bob Gulden / Jim Coke (QRSS) - March 26, 2013 | |||||||||||
| Send updates and corrections to caverbob@aol.com | |||||||||||
| The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com Copyright 2011 NSS Geo2, Bob Gulden NSS#13188LF | |||||||||||
| Do not ask for cave locations, I will not give them out. | |||||||||||
| LENGTH | LENGTH | DEPTH | DEPTH | ||||||||
| # | CAVE NAME | COUNTRY | STATE | COUNTY | MILES | METERS | FEET | METERS | SOURCE | DATE | |
| 1 | Sistema Sac Actun (Nohoch Nah Chich) (Dry & Under Water) | Mexico | Quintana Roo | Tulum | 191.382 | 308000 | 255 | 77.6 | QRSS Long Caves List | Feb-13 | |
| 2 | Sistema Ox Bel Ha | Mexico | Quintana Roo | Tulum | 149.386 | 240413 | 114 | 34.7 | QRSS Long Caves List | Aug-13 | |
| 3 | Sistema Dos Ojos | Mexico | Quintana Roo | Tulum | 51.063 | 82178 | 391 | 119.1 | QRSS Long Caves List | Aug-13 | |
| 4 | Sistema K'oox Baal - Sistema Tux Kupaxa | Mexico | Quintana Roo | Tulum | 40.046 | 64448 | 86 | 26.2 | QRSS Long Caves List | Aug-13 | |
| 5 | Cenote Xunaan Ha (Dry & Under Water) | Mexico | Quintana Roo | Tulum | 36.054 | 58024 | 111 | 33.7 | QRSS Long Caves List | Feb-13 | |
| 6 | Wakulla-Leon Sinks Cave System | U.S.A. | Florida | Leon/Wakulla | 31.990 | 51483 | 350 | 106.7 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 7 | Sistema Toh Ha | Mexico | Quintana Roo | Tulum | 19.271 | 31013 | 42 | 12.8 | QRSS Long Caves List | Aug-13 | |
| 8 | Beacon Woods - Waynes World System | U.S.A. | Florida | Pasco | 11.364 | 18289 | 160 | 48.8 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 9 | Sistema Ponderosa | Mexico | Quintana Roo | Tulum | 9.332 | 15019 | 67 | 20.4 | QRSS Long Caves List | Aug-13 | |
| 10 | Cathedral-Falmouth System | U.S.A. | Florida | Suwannee | 8.939 | 14386 | 190 | 57.9 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 11 | Sistema Dos Pisos | Mexico | Quintana Roo | Tulum | 8.808 | 14176 | 80 | 24.4 | QRSS Long Caves List | Aug-13 | |
| 12 | Cova de sa Gleda - Camp des Pou. | Spain | Balearics | Manacor | 8.389 | 13500 | 82 | 25.0 | Gracia/Clamor/Gamundi | Jan-13 | |
| 13 | Sistema Camilo | Mexico | Quintana Roo | Tulum | 8.027 | 12918 | 82 | 25.0 | QRSS Long Caves List | Aug-13 | |
| 14 | 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 | Jun-13 | |
| 15 | Cova des Pas de Vallgornera | Spain | Balearics | Llucmajor | 6.338 | 10200 | 0 | 0.0 | Gracia/Gamundi/Clamor | Jan-13 | |
| 16 | Sistema Muul 3 | Mexico | Quintana Roo | Tulum | 5.983 | 9629 | 63 | 19.2 | QRSS Long Caves List | Aug-13 | |
| 17 | Sistema Ek Be | Mexico | Quintana Roo | Tulum | 5.846 | 9408 | 60 | 18.3 | QRSS Long Caves List | Aug-13 | |
| 18 | Sisema Chac Mol | Mexico | Quintana Roo | Tulum | 5.712 | 9193 | 93 | 28.3 | QRSS Long Caves List | Aug-13 | |
| 19 | Lucayan Caverns | Bahamas | ? | ? | 5.705 | 9181 | 0 | 0.0 | Exley, Caverns | ||
| 20 | Cueva Quebrada | Mexico | Cozumel | ? | 5.543 | 8921 | 31 | 9.4 | QRSS Long Caves List | Feb-13 | |
| 21 | Sistema Doggi | Mexico | Quintana Roo | Felipe Carrillo Puerto | 5.374 | 8648 | 48 | 14.6 | QRSS Long Caves List | Aug-13 | |
| 22 | Sistema Minotauro | Mexico | Quintana Roo | Tulum | 5.016 | 8072 | 55 | 16.8 | QRSS Long Caves List | Aug-13 | |
| 23 | Tank Cave | Australia | ? | ? | 4.993 | 8035 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 24 | Cenote Zapote | Mexico | Quintana Roo | Tulum | 4.889 | 7869 | 90 | 27.4 | QRSS Long Caves List | Aug-13 | |
| 25 | Madison Blue Spring | U.S.A. | Florida | Madison | 4.831 | 7775 | 120 | 36.6 | Bruic | Jun-13 | |
| 26 | Telford Springs | U.S.A. | Florida | Suwanee | 4.735 | 7620 | 72 | 21.9 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 27 | Peacock Cave I-II System | U.S.A. | Florida | Suwanee | 4.603 | 7408 | 210 | 64.0 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 28 | School Sink | U.S.A. | Florida | Pasco | 4.598 | 7400 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 29 | Devils Eye Cave System | U.S.A. | Florida | Gilchrist | 4.458 | 7174 | 160 | 48.8 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 30 | Manatee Springs Cave System | U.S.A. | Florida | Levy | 4.427 | 7125 | 95 | 29.0 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 31 | Hole in the (Rock Spring) Cave | U.S.A. | Florida | Jackson | 4.424 | 7120 | 139 | 31.1 | Jason Richards - e-mail | Mar-13 | |
| 32 | Cenote Muk K'in | Mexico | Quintana Roo | Felipe Carrillo Puerto | 4.388 | 7063 | 55 | 16.8 | QRSS Long Caves List | Aug-13 | |
| 33 | Hart Springs System | U.S.A. | Florida | Gilchrist | 4.303 | 6925 | 80 | 24.4 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 34 | Entrada Boca Paila | Mexico | Quintana Roo | Tulum | 4.281 | 6890 | 88 | 26.8 | QRSS Long Caves List | Aug-13 | |
| 35 | Chip's Hole/Cals System (Pipeline) | U.S.A. | Florida | Wakalla | 4.222 | 6795 | 306 | 93.3 | WKPP - Casey McKinlay e-mail | Jul-13 | |
| 36 | Sistema Xel-Ha Norte | Mexico | Quintana Roo | Tulum | 4.133 | 6652 | 44 | 13.4 | QRSS Long Caves List | Aug-13 | |
| 37 | Grotta della Utopia | Italy | ? | ? | 4.117 | 6625 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 38 | Three Island Cave | Canada | Quebec | ? | 4.078 | 6563 | 38 | 11.6 | Ian McKenzie e-mail | Jan-13 | |
| 39 | Cocklebiddy Cave (Under Water) | Australia | Western Australia | Nullarbor Plain | 4.039 | 6500 | 0 | 0.0 | John e-mail | Mar-13 | |
| 40 | Bananeira Cave | Brazil | ? | ? | 3.977 | 6400 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 41 | Cueva Aerolito | Mexico | Cozumel | ? | 3.791 | 6101 | 90 | 27.4 | QRSS | Jun-13 | |
| 42 | Dan's Cave | Bahamas | ? | ? | 3.789 | 6098 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 43 | Bonnet Spring | U.S.A. | Florida | Suwannee | 3.788 | 6096 | 132 | 40.2 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 44 | Blue Spring-Green Sink Cave System (Yana) | U.S.A. | Florida | Lafayette | 3.788 | 6096 | 60 | 18.3 | Sheck Exley | May-80 | |
| 45 | Doux de Coly | France | ? | ? | 3.759 | 6050 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | Sep-13 | |
| 46 | Entrada Caapechen (Cenote Manatee) | Mexico | Quintana Roo | Tulum | 3.689 | 5937 | 92 | 28.0 | QRSS Long Caves List | Aug-13 | |
| 47 | Sistema Joolis | Mexico | Quintana Roo | Tulum | 3.671 | 5908 | 66 | 20.1 | QRSS Long Caves List | Aug-13 | |
| 48 | Hornsby Spring Cave System | U.S.A. | Florida | Alachua | 3.651 | 5876 | 150 | 45.7 | Sheck Exley | May-80 | |
| 49 | Springs Cave, Jackson Blue | U.S.A. | Florida | Jackson | 3.465 | 5576 | 160 | 48.8 | Die langsten Unterwasserhohlensysteme der welt, Oliver Knab | Jun-13 | |
| 50 | Cova des Coll | Spain | Balearics | Manacor | 3.436 | 5529 | 0 | 0.0 | Gracia/Clamor/Watkinson | Jan-13 | |
| 51 | Sistema Regina | Mexico | Quintana Roo | Tulum | 3.430 | 5520 | 117 | 35.7 | QRSS Long Caves List | Aug-13 | |
| 52 | Sistema Caterpillar | Mexico | Quintana Roo | Felipe Carrillo Puerto | 3.305 | 5319 | 72 | 21.9 | QRSS Long Caves List | Aug-13 | |
| 53 | Sistema Actun Koh | Mexico | Quintana Roo | Tulum | 3.204 | 5156 | 54 | 16.5 | QRSS Long Caves List | Aug-13 | |
| 54 | Sistema Cangrejo | Mexico | Quintana Roo | Tulum | 3.188 | 5131 | 70 | 21.3 | QRSS Long Caves List | Aug-13 | |
| 55 | Cenote Tortuga | Mexico | Quintana Roo | Tulum | 3.064 | 4931 | 90 | 27.4 | QRSS Long Caves List | Aug-13 | |
| 56 | Sistema Crustacea | Mexico | Quintana Roo | Tulum | 3.032 | 4879 | 84 | 25.6 | QRSS Long Caves List | Aug-13 | |
| 57 | Sistema Dzonot Took | Mexico | Quintana Roo | Tulum | 3.031 | 4878 | 54 | 16.5 | QRSS Long Caves List | Aug-13 | |
| 58 | Sistema Ah Kax Ha (Chicken Ranch) | Mexico | Quintana Roo | Tulum | 2.695 | 4336 | 87 | 26.5 | Gibb, Rouquette-Cathaia, Knudsen, 09/2011 | Aug-13 | |
| 59 | Cenote Chan Ayim | Mexico | Quintana Roo | Tulum | 2.618 | 4214 | 97 | 29.6 | QRSS Long Caves List | Aug-13 | |
| 60 | Sistema Mundo Escondido | Mexico | Quintana Roo | Tulum | 2.602 | 4187 | 86 | 26.2 | QRSS Long Caves List | Aug-13 | |
| 61 | Sistema Tatich (Nuhuch Actum) | Mexico | Quintana Roo | Tulum | 2.582 | 4156 | 24 | 7.3 | Gibb, Rouquette-Cathaia, 05/2011 | Aug-13 | |
| 62 | Moinar Janos Cave | Hungary | Budapest | ? | 2.485 | 4000 | 236 | 72.0 | Tibor Tihanyi e-mail | Jun-13 | |
| 63 | Cenote Burrodromo | Mexico | Quintana Roo | Tulum | 2.462 | 3962 | 47 | 14.3 | QRSS Long Caves List | Aug-13 | |
| 64 | Sistema X'cacel Pequefia | Mexico | Quintana Roo | Tulum | 2.438 | 3924 | 27 | 8.2 | QRSS Long Caves List | Aug-13 | |
| 65 | Gervais Cave | Canada | Ontario | ? | 2.428 | 3907 | 30 | 9.1 | Ian McKenzie e-mail | Jan-13 | |
| 66 | Natural Bridge System, St Marks | U.S.A. | Florida | Wakalla | 2.293 | 3690 | 110 | 33.5 | WKPP - Casey McKinlay e-mail | Jul-13 | |
| 67 | Cow Crap Cave (Under Water) | U.S.A. | Tennessee | Rutherford | 2.291 | 3687 | 0 | 0.0 | Jason Richards e-mail | Aug-13 | |
| 68 | Sistem Ich Tunich | Mexico | Quintana Roo | Tulum | 2.278 | 3666 | 54 | 16.5 | QRSS Long Caves List | Aug-13 | |
| 69 | Indian Spring (Creek) Cave | U.S.A. | Florida | Wakalla | 2.253 | 3626 | 160 | 48.8 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 70 | Cenote Herradura | Mexico | Quintana Roo | Tulum | 2.211 | 3558 | 54 | 16.5 | QRSS Long Caves List | Aug-13 | |
| 71 | Sistema Dos Pies | Mexico | Quintana Roo | Tulum | 2.185 | 3516 | 43 | 13.1 | QRSS Long Caves List | Aug-13 | |
| 72 | M2 Blue | U.S.A. | Florida | Madison | 2.003 | 3224 | 147 | 44.8 | NSS News V50N4P94 Not on Fla. Long cave list | Apr-92 | |
| 73 | Ordinskaya Cave (Gypsum) | Russia | Perm Region | Orda District | 1.988 | 3200 | 164 | 50.0 | Ulyana Zhakova e-mail | Mar-13 | |
| 74 | Phantom Springs Cave | U.S.A. | Texas | Jeff Davis | 1.983 | 3191 | 492 | 72.2 | Texas Speleological Survey via Jerry Atkinson e-mail | Mar-13 | |
| 75 | Giant Cave | Belize | ? | ? | 1.936 | 3116 | 0 | 0.0 | Exley | ||
| 76 | Sistema Luna Azul | Mexico | Quintana Roo | Tulum | 1.928 | 3103 | 71 | 21.6 | QRSS Long Caves List | Aug-13 | |
| 77 | King Pot - Keld Head | United Kingdom | ? | ? | 1.895 | 3050 | 0 | 0.0 | UWS V18N6 | Jun-13 | |
| 78 | Weeki Wachee Spring | U.S.A. | Florida | Hernando | 1.894 | 3048 | 407 | 124.1 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 79 | Lake Tarpon-Tarpon Springs System | U.S.A. | Florida | Pinellas | 1.894 | 3048 | 170 | 51.8 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 80 | Sistema Ramon | Mexico | Quintana Roo | Tulum | 1.836 | 2954 | 104 | 31.7 | QRSS Long Caves List | Aug-13 | |
| 81 | Sistema Nohoch Kai | Mexico | Quintana Roo | Tulum | 1.763 | 2838 | 59 | 18.0 | QRSS Long Caves List | Aug-13 | |
| 82 | Sistema Miguel | Mexico | Quintana Roo | Tulum | 1.760 | 2832 | 60 | 18.3 | QRSS Long Caves List | Aug-13 | |
| 83 | Sistema Ox Pe Pool | Mexico | Quintana Roo | Tulum | 1.729 | 2783 | 85 | 25.9 | QRSS Long Caves List | Aug-13 | |
| 84 | Burnabbie Cave | Australia | Western Australia | Nullarbor Plain | 1.709 | 2750 | 0 | 0.0 | Paul Hosie via OZCavers mailing list | Nov-13 | |
| 85 | Sistema Luna Azui | Mexico | Quintana Roo | Tulum | 1.701 | 2737 | 69 | 21.0 | Clark, Schmittner, 09/2011 | Aug-13 | |
| 86 | Jasper Blue Spring | U.S.A. | Tennessee | Marion | 1.676 | 2697 | 144 | Jason Richards e-mail | Mar-13 | ||
| 87 | Cenote K'oxul | Mexico | Quintana Roo | Tulum | 1.560 | 2511 | 58 | 17.7 | QRSS Long Caves List | Aug-13 | |
| 88 | Cenote Crocodrilo | Mexico | Cozumel | ? | 1.549 | 2493 | 57 | 17.4 | Jim Coke e-mail | Jan-13 | |
| 89 | Cenote Maya (Junea) | Mexico | Quintana Roo | Tulum | 1.532 | 2465 | 54 | 16.5 | QRSS Long Caves List | Aug-13 | |
| 90 | Source de Bestouan | France | ? | ? | 1.529 | 2461 | 0 | 0.0 | UWS V18N6 | Jun-13 | |
| 91 | Peacock III Cave Syphon | U.S.A. | Florida | Suwannee | 1.466 | 2359 | 210 | 64.0 | M.Poucher | Jun-13 | |
| 92 | Covol del Veci | Italy | ? | ? | 1.455 | 2342 | 0 | 0.0 | UWS V18N6 | Jun-13 | |
| 93 | Laguna Lagarto | Mexico | Quintana Roo | Tulum | 1.431 | 2303 | 36 | 11.0 | QRSS Long Caves List | Aug-13 | |
| 94 | Cenote Pepem Actun | Mexico | Quintana Roo | Tulum | 1.390 | 2236 | 89 | 27.1 | QRSS Long Caves List | Aug-13 | |
| 95 | Cenote Chi Chan K'uk'um | Mexico | Quintana Roo | Tulum | 1.387 | 2232 | 44 | 13.4 | QRSS Long Caves List | Aug-13 | |
| 96 | Sistema Ak Tulum | Mexico | Quintana Roo | Tulum | 1.386 | 2231 | 51 | 15.5 | QRSS Long Caves List | Aug-13 | |
| 97 | Cenote Sole (Sunscape) | Mexico | Quintana Roo | Tulum | 1.381 | 2223 | 33 | 10.1 | QRSS Long Caves List | Aug-13 | |
| 98 | Sistema Rudy Sanchez | Mexico | Quintana Roo | Tulum | 1.370 | 2204 | 61 | 18.6 | QRSS Long Caves List | Aug-13 | |
| 99 | Sally Ward Cave | U.S.A. | Florida | Wakulla | 1.364 | 2195 | 350 | 106.7 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 100 | Lineeater (Stevenson Spring) | U.S.A. | Florida | Hamilton | 1.364 | 2195 | 60 | 18.3 | Bryant, et.al. | Jun-13 | |
| 101 | Sistema Chakalal | Mexico | Quintana Roo | Tulum | 1.348 | 2170 | 22 | 6.7 | QRSS Long Caves List | Aug-13 | |
| 102 | Cenote Kiix Pepem | Mexico | Quintana Roo | Tulum | 1.343 | 2161 | 44 | 13.4 | QRSS Long Caves List | Aug-13 | |
| 103 | Sistema Carrillo | Mexico | Quintana Roo | Tulum | 1.332 | 2144 | 26 | 7.9 | QRSS Long Caves List | Aug-13 | |
| 104 | Sistema Kachkalak | Mexico | Quintana Roo | Tulum | 1.317 | 2119 | 44 | 13.4 | QRSS Long Caves List | Aug-13 | |
| 105 | Mirial | Libya | Cyrenaical | Banghazi | 1.315 | 2117 | 0 | 0.0 | Atlas Great Caves of the World | 1989 | |
| 106 | Cueva Aak Kimin (Yai-ku Lagoon) | Mexico | Quintana Roo | Tulum | 1.243 | 2001 | 225 | 68.6 | QRSS Long Caves List | Aug-13 | |
| 107 | Emergence du Ressell | France | ? | ? | 1.243 | 2000 | 265 | 80.8 | Buchaly, Waldbrener | Jun-13 | |
| 108 | Laguna Nonec | Mexico | Quintana Roo | Tulum | 1.243 | 2000 | 35 | 10.7 | QRSS Long Caves List | Aug-13 | |
| 109 | Sistema Yang kai | Mexico | Quintana Roo | Tulum | 1.224 | 1970 | 69 | 21.0 | QRSS Long Caves List | Aug-13 | |
| 110 | Leopard Frog Cave | Canada | ? | ? | 1.222 | 1966 | 0 | 0.0 | Steve Worthington e-mail | May-13 | |
| 111 | Sistema Ixchel | Mexico | Quintana Roo | Solidaridad | 1.173 | 1887 | 220 | 67.0 | QRSS Long Caves List | Aug-13 | |
| 112 | Sistema Chico Upstream (Spring) | Mexico | Quintana Roo | Tulum | 1.156 | 1861 | 59 | 18.0 | QRSS Long Caves List | Aug-13 | |
| 113 | Sistema Zebra | Mexico | Quintana Roo | Tulum | 1.141 | 1837 | 56 | 17.1 | QRSS Long Caves List | Aug-13 | |
| 114 | Eagles Nest | U.S.A. | Florida | Hernando | 1.136 | 1828 | 315 | 96.0 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 115 | Ellaville-Suwannacoochee System | U.S.A. | Florida | Suwannee | 1.136 | 1828 | 155 | 47.2 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 116 | Washington Blue Spring | U.S.A. | Florida | Washington | 1.136 | 1828 | 0 | 0.0 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 117 | Sistema Pierre's Hole | Mexico | Quintana Roo | Tulum | 1.123 | 1807 | 40 | 12.2 | QRSS Long Caves List | Aug-13 | |
| 118 | Sistema Muuch | Mexico | Quintana Roo | Tulum | 1.101 | 1772 | 18 | 5.5 | Gibb, Knudsen, 05/2011 | Aug-13 | |
| 119 | Guy James Cave | U.S.A. | Tennessee | Rutherford | 1.079 | 1736 | 0 | 0 | Jason Richards e-mail | Nov-13 | |
| 120 | Cueva de La Atlantida (Tunnel ) (Lava Tube) | Spain | Canarias Island | Lanzarote | 1.072 | 1726 | 171 | 52.1 | Grupo de Espeleologia Tebexcorade | 4/8 | |
| 121 | Sistema Heder | Mexico | Quintana Roo | Tulum | 1.065 | 1714 | 80 | 24.4 | QRSS Long Caves List | Aug-13 | |
| 122 | Sistema Flor de Mayo (Underwater) | Mexico | Quintana Roo | Tulum | 1.056 | 1700 | 66 | 20.1 | QRSS Long Caves List | Aug-13 | |
| 123 | Sistema Yax Tun | Mexico | Quintana Roo | Tulum | 1.056 | 1699 | 59 | 18.0 | QRSS Long Caves List | Aug-13 | |
| 124 | Sistema Alomo | Mexico | Quintana Roo | Tulum | 1.049 | 1689 | 30 | 9.1 | QRSS Long Caves List | Aug-13 | |
| 125 | Twin Spring Cave | U.S.A. | Florida | Jackson | 1.043 | 1679 | 102 | 31.1 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |
| 126 | Roubidoux Spring | U.S.A. | Missouri | Pulaski | 1.040 | 1674 | 0 | 0.0 | Jonathan Beard e-mail | Mar-13 | |
| 127 | Source de Port Miou | France | ? | ? | 1.038 | 1670 | 0 | 0.0 | UWS V18N6 | Jun-13 | |
| 128 | Blue Hole Spring | U.S.A. | Florida | Jackson | 1.000 | 1609 | 0 | 0.0 | Caves and Karst of Florida, 2008 NSS Convention | Jul-13 | |