WORLD LONGEST UNDERWATER CAVES   Compiled by: Bob Gulden / Jim Coke (QRSS) - May 18, 2016
Send updates and corrections to caverbob@aol.com
The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com           Copyright 2016 NSS Geo2, Bob Gulden NSS#13188LF
Do not ask for cave locations, I will not give them out.  
LENGTH LENGTH DEPTH DEPTH
1 Sistema Sac Actun (Nohoch Nah Chich, Aktun Hu)     (Underwater+Dry) Mexico Quintana Roo Tulum 208.302 335230 332 101.2 QRSS Long Caves List May-15
2 Sistema Ox Bel Ha                Mexico Quintana Roo Tulum 159.783 257146 114 34.7 QRSS Long Caves List May-15
3 Sistema Dos Ojos     (Underwater) Mexico Quintana Roo Tulum 51.760 83300 391 119.1 QRSS Long Caves List May-15
4 Sistema K'oox Baal  - Sistema Tux Kupaxa     (Underwater+Dry) Mexico Quintana Roo Tulum 47.143 75870 86 26.2 QRSS Long Caves List May-15
5 Sistema Xunaan Ha     (Underwater+Dry) Mexico Quintana Roo Tulum 37.559 60445 89 27.1 QRSS Long Caves List May-15
13 Wakulla-Leon Sinks Cave System           U.S.A. Florida Leon/Wakulla 33.730 54283 350 106.7 Casey McKinlay e-mail Dec-16
14 Sistema Toh Ha   (Underwater) Mexico Quintana Roo Tulum 28.403 45711 42 12.8 QRSS Long Caves List May-15
15 Sistema Pool Tunich   (Underwater+Dry) Mexico Quintana Roo Xcaret 23.784 38276 79 24.0 QRSS Long Caves List Jun-15
16 Sistema Sand Crack   (Underwater) Mexico Quintana Roo Tulum 16.619 26746 58 17.7 QRSS Long Caves List Jun-15
17 Sistema Nohoch Pek - Muk K'in   (Underwater) Mexico Quintana Roo Tulum 15.634 25160 61 18.6 QRSS Long Caves List Jun-15
18 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
19 Sistema Ponderosa     (Underwater+Dry) Mexico Quintana Roo Tulum 10.785 17356 67 20.4 QRSS Long Caves List May-15
20 Cathedral-Falmouth System        U.S.A. Florida Suwannee 8.939 14386 190 57.9 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-13
21 Sistema Murena  Aak Kimin Mexico Quintana Roo Tulum 8.866 14269 225 68.6 QRSS Long Caves List Jun-15
22 Sistema Dos Pisos              Mexico Quintana Roo Tulum 8.809 14176 80 24.4 QRSS Long Caves List Jun-15
23 Pozo Azul Spain Burgos Covanera 8.448 13595     Igor Liorente e-mail; Aug-15
24 Cova de sa Gleda - Camp des Pou.    Spain Balearics Manacor 8.389 13500 82 25.0 Gracia/Clamor/Gamundi Jan-13
25 Sistema Caterpillar      Mexico Quintana Roo Felipe Carrillo Puerto 8.359 13452 89 27.1 QRSS Long Caves List Jun-15
26 Sistema Camilo                 Mexico Quintana Roo Tulum 8.324 13396 82 25.0 QRSS Long Caves List Jun-15
27 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
28 Sistema Doggi     Mexico Quintana Roo Felipe Carrillo Puerto 7.479 12036 48 14.6 QRSS Long Caves List Jun-15
29 Peacock Cave I-II System         U.S.A. Florida Suwanee 7.200 11587 210 64.0 Richard Blackburn e-mail Jun-13
30 Cueva Quebrada         Mexico Quintana Roo Tulum 7.180 11555 31 9.4 QRSS Long Caves List Jun-15
31 Sistema Cupul Ha     (Underwater+Dry) Mexico Quintana Roo Tulum 6.930 11152 46 14.0 QRSS Long Caves List May-15
32 Sistema El Puente Mexico Quintana Roo Tulum 6.508 10474 296 90.2 QRSS Long Caves List May-15
33 Sistema Ek Be                    Mexico Quintana Roo Tulum 6.155 9905 60 18.3 QRSS Long Caves List Jun-15
34 Sistema Muul Three      Mexico Quintana Roo Tulum 5.983 9629 63 19.2 QRSS Long Caves List Jun-15
35 Sistema Nohoch Kai    Mexico Quintana Roo Tulum 5.774 9292 85 25.9 QRSS Long Caves List May-15
36 Sistema Chac Mol             Mexico Quintana Roo Tulum 5.712 9193 93 28.3 QRSS Long Caves List Jun-15
37 Lucayan Caverns        Bahamas ? ? 5.705 9181 0 0.0 Exley, Caverns  
38 Chip's Hole/Cals System (Pipeline)    U.S.A. Florida Wakalla 5.610 9028 160 93.3 WKPP - Casey McKinlay e-mail Jul-13
39 Sistema Minotauro                Mexico Quintana Roo Tulum 5.430 8739 55 16.8 QRSS Long Caves List Jun-15
40 Hole in the Wall(Rock Spring) Cave        U.S.A. Florida Jackson 5.252 8452 139 42.4 Jason Richards Facebook Oct-14
41 Tank Cave      Australia South Australia ? 4.993 8035 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-12
42 Cenote Zapote                    Mexico Quintana Roo Tulum 4.890 7869 90 27.4 QRSS Long Caves List Jun-15
43 Madison Blue Spring              U.S.A. Florida Madison 4.831 7775 120 36.6 Bruic Jun-05
44 Telford Springs                  U.S.A. Florida Suwanee 4.735 7620 72 21.9 Caves and Karst of Florida, 2008 NSS Convention Jul-13
45 School Sink      U.S.A. Florida Pasco 4.598 7400 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-13
46 Devils Eye Cave System           U.S.A. Florida Gilchrist 4.458 7174 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-13
47 Manatee Springs Cave System       U.S.A. Florida Levy 4.427 7125 95 29.0 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-13
48 Hart Springs System       U.S.A. Florida Gilchrist 4.303 6925 80 24.4 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-13
49 Entrada Boca Paila                    Mexico Quintana Roo Tulum 4.281 6890 88 26.8 QRSS Long Caves List Jun-15
50 Sistema Xel-Ha Norte         Mexico Quintana Roo Tulum 4.133 6652 44 13.4 QRSS Long Caves List Jun-15
51 Grotta della Utopia       Italy ? ? 4.117 6625 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-12
52 Three Island Cave                Canada Quebec ? 4.078 6563 38 11.6 Ian McKenzie e-mail Jan-13
53 Cocklebiddy Cave  (Under Water) Australia Western Australia Nullarbor Plain 4.039 6500 0 0.0 John e-mail Mar-08
54 Sistema Taj Mahal     (Underwater+Dry) Mexico Quintana Roo Tulum 3.998 6434 80 24.4 QRSS Long Caves List May-15
55 Bananeira Cave      Brazil ? ? 3.977 6400 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-12
56 Cueva Aerolito            Mexico Cozumel ? 3.791 6101 90 27.4 QRSS Jun-05
57 Cueva Aerolito            Mexico Quintana Roo ? 3.790 6100 90 27.4 QRSS Long Caves List May-15
58 Dan's Cave      Bahamas ? ? 3.789 6098 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-12
59 Bonnet Spring                    U.S.A. Florida Suwannee 3.788 6096 132 40.2 Caves and Karst of Florida, 2008 NSS Convention Jul-13
60 Blue Spring-Green Sink Cave System (Yana)    U.S.A. Florida Lafayette 3.788 6096 60 18.3 Sheck Exley May-80
61 Doux de Coly                     France ? ? 3.759 6050 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-12
62 Entrada Caapechen  (Cenote Manatee)         Mexico Quintana Roo Tulum 3.689 5937 92 28.0 QRSS Long Caves List Jun-15
63 Sistema Joolis              Mexico Quintana Roo Tulum 3.671 5908 66 20.1 QRSS Long Caves List Jun-15
64 Hornsby Spring Cave System       U.S.A. Florida Alachua 3.651 5876 150 45.7 Sheck Exley May-80
65 Sistema Regina                   Mexico Quintana Roo Tulum 3.645 5866 117 35.7 QRSS Long Caves List Jun-15
66 Springs Cave, Jackson Blue       U.S.A. Florida Jackson 3.465 5576 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-13
67 Cova des Coll     Spain Balearics Manacor 3.436 5529 0 0.0 Gracia/Clamor/Watkinson Jan-13
68 Sistema Actum Chen Mexico Quintana Roo Tulum 3.377 5435 82 25.0 QRSS Long Caves List Jun-15
69 Sistema Ah Kax Ha  (Chicken Ranch) Mexico Quintana Roo Tulum 3.247 5225 87 26.5 Gibb, Rouquette-Cathaia, Knudsen, 09/2011 Jun-15
70 Sistema Actun Koh                Mexico Quintana Roo Tulum 3.204 5156 54 16.5 QRSS Long Caves List Jun-15
71 Sistema Cangrejo     Mexico Quintana Roo Tulum 3.188 5131 70 21.3 QRSS Long Caves List Jun-15
72 Sistema Chi Keen Mexico Quintana Roo Tulum 3.102 4992 57 17.4 QRSS Long Caves List Jun-15
73 Cenote Tortuga           Mexico Quintana Roo Tulum 3.064 4931 90 27.4 QRSS Long Caves List Jun-15
74 Sistema Crustacea                Mexico Quintana Roo Tulum 3.032 4879 84 25.6 QRSS Long Caves List Jun-15
75 Sistema Dzonot Took             Mexico Quintana Roo Tulum 3.031 4878 54 16.5 QRSS Long Caves List Jun-15
76 Cenote Kan-Ha    Mexico Quintana Roo Tulum 2.847 4582 92 28.0 QRSS Long Caves List May-15
77 Giant Cave                       Belize ? ? 2.773 4463 108 32.9  Jim Coke (QRSS) May-15
78 Sistema Mosquito Factory Mexico Quintana Roo Tulum 2.669 4296 34 10.4 QRSS Long Caves List Jun-15
79 Cenote Chan Ayim             Mexico Quintana Roo Tulum 2.618 4214 97 29.6 QRSS Long Caves List Jun-15
80 Sistema Tatich (Nuhuch Actum) Mexico Quintana Roo Tulum 2.582 4156 24 7.3 Gibb, Rouquette-Cathaia, 05/2011 Jun-15
81 Ka-Lag Dzonot Mexico Quintana Roo Tulum 2.538 4085 48 14.6 QRSS Long Caves List Jun-15
82 Moinar Janos Cave               Hungary Budapest ? 2.485 4000 236 72.0 Tibor Tihanyi e-mail Jun-13
83 Cenote Burrodromo                Mexico Quintana Roo Tulum 2.462 3962 47 14.3 QRSS Long Caves List Jun-15
84 Cow Crap Cave  (Under Water) U.S.A. Tennessee Rutherford 2.437 3922 144 43.9 Jason Richards e-mail Aug-12
85 Gervais Cave                     Canada Ontario ? 2.428 3907 30 9.1 Ian McKenzie e-mail Jan-13
86 Sistema Vecan  Mexico Quintana Roo Tulum 2.412 3882 89 27.1 QRSS Long Caves List May-15
87 Natural Bridge System, St Marks    U.S.A. Florida Wakalla 2.293 3690 110 33.5 WKPP - Casey McKinlay e-mail Jul-13
88 Sistem Ich Tunich                Mexico Quintana Roo Tulum 2.278 3666 54 16.5 QRSS Long Caves List Jun-15
89 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
90 Sistema Dos Pies                 Mexico Quintana Roo Tulum 2.185 3516 43 13.1 QRSS Long Caves List Jun-15
91 Oliero Spring Italy ? ? 2.175 3500 0 0.0   Apr-15
92 Sistema Sak' Sak"    Mexico Quintana Roo Tulum 2.111 3398 51 15.5 QRSS Long Caves List May-15
93 Sistema Alomo-Colmena      Mexico Quintana Roo Tulum 2.056 3309 32 9.8 QRSS Long Caves List May-15
94 Jasper Blue Spring U.S.A. Tennessee Marion 2.051 3301 144 43.9 Jason Richards e-mail Mar-13
95 M2 Blue                        U.S.A. Florida Madison 2.003 3224 147 44.8 NSS News V50N4P94 Not on Fla. Long cave list Apr-92
96 Ordinskaya Cave       (Gypsum)  Russia Perm Region Orda District 1.988 3200 164 50.0 Ulyana Zhakova e-mail Mar-13
97 Phantom Springs Cave U.S.A. Texas Jeff Davis 1.948 3136 493 150.3 Texas Speleological Survey via Jerry Atkinson e-mail Nov-13
98 Sistema Choko Pek Mexico Quintana Roo Tulum 1.943 3127 48 14.6 QRSS Long Caves List Jun-15
99 Sistema Luna Azul    Mexico Quintana Roo Tulum 1.928 3103 71 21.6 QRSS Long Caves List Aug-15
100 Weeki Wachee Spring   U.S.A. Florida Hernando 1.894 3048 407 124.1 Caves and Karst of Florida, 2008 NSS Convention Jul-13
101 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
102 Sistema Ramon  Mexico Quintana Roo Tulum 1.836 2954 104 31.7 QRSS Long Caves List Jun-15
103 Sistema Carwash Mexico Quintana Roo Tulum 1.831 2946 87 26.5 QRSS Long Caves List Jun-15
104 Sistema Miguel                 Mexico Quintana Roo Tulum 1.760 2832 60 18.3 QRSS Long Caves List Jun-15
105 Cenote Subul Mexico Quintana Roo Tulum 1.754 2823 49 14.9 QRSS Long Caves List Jun-15
106 Sistema Ox Pe Pool Mexico Quintana Roo Tulum 1.729 2783 85 25.9 QRSS Long Caves List Jun-15
107 Burnabbie Cave           Australia Western Australia Nullarbor Plain 1.709 2750 0 0.0 Paul Hosie via OZCavers mailing list Nov-12
108 Vrulja Modric Croatia     1.706 2746 118 36.0 Mladen Garasic e-mail Jan-16
109 Cenote Crocodrilo      Mexico Cozumel ? 1.549 2493 57 17.4 Jim Coke e-mail Jan-13
110 Cenote Crocodrilo      Mexico Cozumel ? 1.549 2493 57 17.4 Jim Coke e-mail Jan-15
111 Twin Caves U.S.A. Florida Jackson 1.540 2478 104 31.7 Rob Neto e-mail Aug-15
112 Source de Bestouan               France ? ? 1.529 2461 0 0.0 UWS V18N6 Jun-05
113 Sistema Zebra                    Mexico Quintana Roo Tulum 1.518 2443 58 17.7 QRSS Long Caves List Jun-15
114 Sistema Casa del Jaguar     (Underwater) Mexico Quintana Roo Tulum 1.503 2419 29 8.8 QRSS Long Caves List May-15
115 Sistema Dos Coronas Mexico Quintana Roo Tulum 1.498 2410 52 16.0 QRSS Long Caves List Jun-15
116 Peacock III Cave Syphon          U.S.A. Florida Suwannee 1.466 2359 210 64.0 M.Poucher Jun-05
117 Covol del Veci        Italy ? ? 1.455 2342 0 0.0 UWS V18N6 Jun-05
118 Cenote Pepem Actun     Mexico Quintana Roo Tulum 1.389 2236 89 27.1 QRSS Long Caves List Jun-15
119 Cenote Chi Chan K'uk'um      Mexico Quintana Roo Tulum 1.387 2232 44 13.4 QRSS Long Caves List Jun-15
120 Cenote Sole (Sunscape)       Mexico Quintana Roo Tulum 1.381 2223 33 10.1 QRSS Long Caves List Jun-15
121 Sistema Rudy Sanchez              Mexico Quintana Roo Tulum 1.370 2205 61 18.6 QRSS Long Caves List Jun-15
122 Sally Ward Cave                  U.S.A. Florida Wakulla 1.364 2195 350 106.7 Caves and Karst of Florida, 2008 NSS Convention Jul-13
123 Lineeater (Stevenson Spring)    U.S.A. Florida Hamilton 1.364 2195 60 18.3 Bryant, et.al. Jun-05
124 Roubidoux Spring      U.S.A. Missouri Pulaski 1.352 2176 266 81.1 Steve Gridley e-mail Dec-13
125 Sistema Chakalal             Mexico Quintana Roo Tulum 1.348 2170 22 6.7 QRSS Long Caves List Jun-15
126 Cenote Kiix Pepem    Mexico Quintana Roo Tulum 1.343 2162 44 13.4 QRSS Long Caves List Jun-15
127 Sistema Carrillo     Mexico Quintana Roo Tulum 1.332 2144 26 7.9 QRSS Long Caves List Jun-15
128 Sistema Muuch Mexico Quintana Roo Tulum 1.322 2128 18 5.5 QRSS Long Caves List May-15
129 Sistema Kachkalak Mexico Quintana Roo Tulum 1.317 2120 44 13.4 QRSS Long Caves List Jun-15
130 Mirial Libya Cyrenaical Banghazi 1.315 2117 0 0.0 Atlas Great Caves of the World 1989
131 Sistema Sac Pepem (Underwater) Mexico Quintana Roo Tulum 1.280 2060 47 14.3 QRSS Long Caves List May-15
132 Sistema Ixchel  (underwater & Dry) Mexico Quintana Roo Solidaridad 1.264 2034 220 67.0 QRSS Long Caves List Feb-16
133 Emergence du Ressell             France ? ? 1.243 2000 265 80.8 Buchaly, Waldbrener Jun-05
134 Laguna Nonec                     Mexico Quintana Roo Tulum 1.243 2000 35 10.7 QRSS Long Caves List Jun-15
135 Sistema Yang kai                   Mexico Quintana Roo Tulum 1.224 1970 69 21.0 QRSS Long Caves List Jun-15
136 Leopard Frog Cave                Canada ? ? 1.222 1966 0 0.0 Steve Worthington e-mail May-13
137 Cenote Tu cud'tang Che Mexico Quintana Roo Tulum 1.183 1904 69 21.0 QRSS Long Caves List Jun-15
138 Sistema Domingos Mexico Quintana Roo Tulum 1.158 1863 38 11.6 QRSS Long Caves List Jun-15
139 Sistema Chico Upstream (Spring)              Mexico Quintana Roo Tulum 1.156 1861 59 18.0 QRSS Long Caves List Jun-15
140 Eagles Nest       U.S.A. Florida Hernando 1.136 1828 315 96.0 Caves and Karst of Florida, 2008 NSS Convention Jul-13
141 Ellaville-Suwannacoochee System       U.S.A. Florida Suwannee 1.136 1828 155 47.2 Caves and Karst of Florida, 2008 NSS Convention Jul-13
142 Washington Blue Spring       U.S.A. Florida Washington 1.136 1828 0 0.0 Caves and Karst of Florida, 2008 NSS Convention Jul-13
143 Bozel Spring  U.S.A. Florida Jackson 1.080 1738 120 36.6 Rob Neto e-mail Aug-15
144 Sistema Vanilla Mexico Quintana Roo Tulum 1.074 1728 38 11.6 QRSS Long Caves List Jun-15
145 Wet Dream Cave Canada British Columbia Vancouver Island 1.073 1727 148 45.1 Jason Richards e-mail Aug-15
146 Cueva de La Atlantida (Tunnel )   (Lava Tube) Spain Canarias Island Lanzarote 1.072 1726 171 52.1 Grupo de Espeleologia Tebexcorade 4/8
147 Sistema Heder                    Mexico Quintana Roo Tulum 1.065 1714 80 24.4 QRSS Long Caves List Jun-15
148 Guy James Cave      U.S.A. Tennessee Rutherford 1.061 1708 42 12.8 Jason Richards e-mail Nov-13
149 Sistema Flor de Mayo   (Underwater) Mexico Quintana Roo Tulum 1.056 1700 66 20.1 QRSS Long Caves List Jun-15
150 Sistema Yax Tun      Mexico Quintana Roo Tulum 1.056 1699 59 18.0 QRSS Long Caves List Jun-15
151 Cenote Templo  Mexico Quintana Roo Tulum 1.044 1680 69 21.0 QRSS Long Caves List May-15
152 Twin Spring Cave       U.S.A. Florida Jackson 1.043 1679 102 31.1 Caves and Karst of Florida, 2008 NSS Convention Jul-13
153 Source de Port Miou              France ? ? 1.038 1670 0 0.0 UWS V18N6 Jun-05
154 Sistema Las Ninas   Mexico Quintana Roo Tulum 1.006 1619 40 12.2 QRSS Long Caves List May-15
155 Sistema Uxuxubi      Mexico Quintana Roo Tulum 1.002 1612 51 15.5 QRSS Long Caves List May-15
156 Blue Hole Spring       U.S.A. Florida Jackson 1.000 1609 0 0.0 Caves and Karst of Florida, 2008 NSS Convention Jul-13
157 Jacop's Well U.S.A. Texas Hays 0.822 1323 137 41.8 Gregg Tatum for JWEP email Oct-14
158 Cetina Glavas Croatia Sibensko-kninska zupanija Civljane 0.249 400 361 110.0 Krzysztof  Starnawski map on Facebook Oct-15
159 Goodenough Spring   U.S.A. Texas Val Verde 0.111 178 377 114.9 Texas Speleological Survey via Jerry Atkinson e-mail Nov-13