WORLD LONGEST UNDERWATER CAVES   Compiled by: Bob Gulden - July 02, 2010  
Send updates and corrections to caverbob@aol.com  
The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com           Copyright 2010 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 Ox Bel Ha                Mexico Quintana Roo Tulum 111.870 180038 110 33.5 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
2 Sistema Sac Actun (Nohoch Nah Chich)      Mexico Quintana Roo Tulum 109.188 175721 235 71.6 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jan-10
3 Sistema Dos Ojos                  Mexico Quintana Roo Tulum 39.942 64281 391 119.1 QRSS via Jim Coke e-mail Jan-10
3 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-09
4 Sistema Actun Hu                     Mexico Quintana Roo Tulum 18.555 29862 197 60.0 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jan-10
5 Cenote Xunaan Ha Mexico Quintana Roo Tulum 17.301 27844 89 27.1 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
6 Sistema Toh Ha                    Mexico Quintana Roo Tulum 17.272 27796 42 12.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
7 Sistema Caracol Mexico Quintana Roo Tulum 16.760 26972 0 0.0 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
8 Sistema Naranjal (Najaron-Maya Blue)        Mexico Quintana Roo Tulum 15.114 24324 114 34.7 QRSS via Jim Coke e-mail Nov-08
9 Sistema K'oox Baal               Mexico Quintana Roo Tulum 12.481 20087 86 26.2 QRSS via Jim Coke e-mail Nov-08
10 Beacon Woods - Waynes World System               U.S.A. Florida Pasco 11.364 18288 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
11 Sistema Tux Kupaxa         Mexico Quintana Roo Tulum 9.410 15144 50 15.2 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
12 Sistema Ponderosa                Mexico Quintana Roo Tulum 9.332 15019 54 16.4 QRSS via Jim Coke e-mail 01/01
13 Cathedral-Falmouth System        U.S.A. Florida Suwannee 8.939 14386 190 57.9 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
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-09
15 Cenote Pitch Mexico Quintana Roo Tulum 7.511 12087 0 0.0 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
16 Sistema Camilo                 Mexico Quintana Roo Tulum 6.825 10984 82 25.0 QRSS via Jim Coke e-mail Jan-10
17 Cova de sa Gleda      Spain Balearics Manacor 6.524 10500 82 25.0 Tony Merino e-mail Jan-08
18 Sistema Muul 3              Mexico Quintana Roo Tulum 5.983 9629 63 19.2 QRSS via Jim Coke e-mail Sep-05
19 Sisema Chac Mool                 Mexico Quintana Roo Tulum 5.712 9193 93 28.3 Gerrard 2000
20 Lucayan Caverns        Bahamas ? ? 5.705 9181 0 0.0 Exley, Caverns
21 Cueva Quebrada         Mexico Cozumel ? 5.543 8920 35 10.7 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
22 Sistema Dos Pisos              Mexico Quintana Roo Tulum 5.222 8404 85 25.9 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
23 Tank Cave      Australia ? ? 4.993 8035 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
24 Madison Blue Spring              U.S.A. Florida Madison 4.831 7775 120 36.6 Bruic 1997
25 Cenote Zapote                    Mexico Quintana Roo Tulum 4.783 7697 90 27.4 QRSS via Jim Coke e-mail Jan-07
26 Telford Springs                  U.S.A. Florida Suwanee 4.735 7620 72 21.9 Caves and Karst of Florida, 2008 NSS Convention Jul-08
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-09
28 School Sink      U.S.A. Florida ? 4.598 7400 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
29 Devils Eye Cave System           U.S.A. Florida Gilchrist 4.458 7174 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
30 Manatee Springs Cave System       U.S.A. Florida Levy 4.427 7125 95 29.0 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
31 Hart Springs System       U.S.A. Florida Gilchrist 4.303 6925 80 24.4 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
32 Entrada Boca Paila                    Mexico Quintana Roo Tulum 4.281 6890 88 26.8 QRSS via Jim Coke e-mail Jul-08
33 Chip's Hole/Cals System (Pipeline)    U.S.A. Florida Wakalla 4.222 6795 306 93.3 WKPP - Casey McKinlay e-mail Jul-07
34 Sistema Xel-Ha Norte         Mexico Quintana Roo Tulum 4.133 6652 44 13.4 QRSS via Jim Coke e-mail Jan-07
35 Grotta della Utopia       Italy ? ? 4.117 6625 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
36 Three Island Cave                Canada Quebec ? 4.078 6563 38 11.6 Ian McKenzie e-mail Jan-06
37 Cocklebiddy Cave   Australia Western Australia Nullarbor Plain 4.039 6500 0 0.0 John e-mail Mar-08
38 Bananeira Cave      Brazil ? ? 3.977 6400 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
39 Cueva Aerolito            Mexico Cozumel ? 3.791 6101 90 27.4 QRSS 2003
40 Dan's Cave      Bahamas ? ? 3.789 6098 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
41 Bonnet Spring                    U.S.A. Florida Suwannee 3.788 6096 132 40.2 Caves and Karst of Florida, 2008 NSS Convention Jul-08
42 Blue Spring-Green Sink Cave System (Yana)    U.S.A. Florida Lafayette 3.788 6096 60 18.3 Sheck Exley 05/80
43 Doux de Coly                     France ? ? 3.759 6050 0 0.0 Die langsten Unterwasserholensysteme der Welt Sep-08
44 Entrada Caapechen  (Cenote Manatee)         Mexico Quintana Roo Tulum 3.689 5937 92 28.0 QRSS via Jim Coke e-mail Jun-07
45 Sistema Joolis              Mexico Quintana Roo Tulum 3.671 5908 66 20.1 QRSS via Jim Coke e-mail Nov-08
46 Hornsby Spring Cave System       U.S.A. Florida Alachua 3.651 5876 150 45.7 Sheck Exley 05/80
47 Springs Cave, Jackson Blue       U.S.A. Florida Jackson 3.465 5576 160 48.8 Die langsten Unterwasserhohlensysteme der welt, Oliver Knab Jun-09
48 Sistema Actun Chen               Mexico Quintana Roo Tulum 3.377 5435 82 25.0 QRSS via Jim Coke e-mail Jan-07
49 Sistema Taj Mahal                Mexico Quintana Roo Tulum 3.331 5360 80 24.4 QRSS via Jim Coke e-mail Jan-07
50 Sistema Actun Koh                Mexico Quintana Roo Tulum 3.204 5156 54 16.5 QRSS via Jim Coke e-mail Jan-07
51 Sistema Cangrejo     Mexico Quintana Roo Tulum 3.188 5131 70 21.3 QRSS via Jim Coke e-mail Nov-08
52 Cenote Tortuga           Mexico Quintana Roo Tulum 3.044 4899 90 27.4 QRSS via Jim Coke e-mail Jan-07
53 Sistema Dzonot Took             Mexico Quintana Roo Tulum 2.943 4736 54 16.5 QRSS via Jim Coke e-mail Jan-07
54 Ordinskaya Cave       (Gypsum)  Russia Perm Region Orda District 2.858 4600 164 50.0 Ulyana Zhakova e-mail Mar-10
55 Cenote Chan Ayim             Mexico Quintana Roo Tulum 2.618 4214 97 29.6 QRSS via Jim Coke e-mail Jan-07
56 Sistema Mundo Escondido     Mexico Quintana Roo Tulum 2.602 4187 86 26.2 QRSS via Jim Coke e-mail Jan-10
57 Sistema Regina                   Mexico Quintana Roo Tulum 2.576 4146 117 35.7 QRSS via Jim Coke e-mail Apr-09
58 Moinar Janos Cave               Hungary Budapest ? 2.485 4000 236 72.0 Tibor Tihanyi e-mail Jun-04
59 Cenote Burrodromo                Mexico Quintana Roo Tulum 2.462 3962 47 14.3 QRSS via Jim Coke e-mail Jan-07
60 Gervais Cave                     Canada Ontario ? 2.428 3907 30 9.1 Ian McKenzie e-mail Jan-06
61 Natural Bridge System, St Marks    U.S.A. Florida Wakalla 2.293 3690 110 33.5 WKPP - Casey McKinlay e-mail Jul-07
62 Sistema Crustacea                Mexico Quintana Roo Tulum 2.253 3626 62 18.9 QRSS via Jim Coke e-mail Jan-07
63 Indian Spring (Creek) Cave       U.S.A. Florida Wakalla 2.253 3626 160 48.8 Caves and Karst of Florida, 2008 NSS Convention Jul-08
64 Cenote Herradura       Mexico Quintana Roo Tulum 2.211 3558 54 16.5 QRSS via Jim Coke e-mail Jul-08
65 Sistem Ich Tunich                Mexico Quintana Roo Tulum 2.198 3538 52 15.8 QRSS via Jim Coke e-mail Jan-07
66 Sistema Dos Pies                 Mexico Quintana Roo Tulum 2.185 3516 43 13.1 QRSS via Jim Coke e-mail Jan-07
67 M2 Blue                        U.S.A. Florida Madison 2.003 3224 147 44.8 NSS News V50N4P94 Not on Fla. Long cave list 04/92
68 Sistema Minotauro                Mexico Quintana Roo Tulum 1.938 3119 48 14.6 QRSS via Jim Coke e-mail Jan-07
69 Giant Cave                       Belize ? ? 1.936 3116 0 0.0 Exley
70 King Pot - Keld Head             United Kingdom ? ? 1.895 3050 0 0.0 UWS V18N6 1991
71 Weeki Wachee Spring   U.S.A. Florida Hernando 1.894 3048 407 124.1 Caves and Karst of Florida, 2008 NSS Convention Jul-08
72 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-08
73 Hole in the Rock Spring        U.S.A. Florida Jackson 1.783 2869 102 31.1 Sheck Exley 10/80
74 Sistema Nohoch Kai    Mexico Quintana Roo Tulum 1.763 2838 59 18.0 QRSS via Jim Coke e-mail Apr-09
75 Sistema Miguel                 Mexico Quintana Roo Tulum 1.760 2832 60 18.3 QRSS via Jim Coke e-mail Jul-08
76 Burnabbie Cave           Australia Western Australia Nullarbor Plain 1.709 2750 0 0.0 Paul Hosie via OZCavers mailing list Nov-06
77 Cenote K'oxul           Mexico Quintana Roo Tulum 1.560 2511 58 17.7 QRSS via Jim Coke e-mail Nov-07
78 Cenote Crocodrilo      Mexico Cozumel ? 1.549 2493 57 17.4 Jim Coke e-mail Jan-06
79 Cenote Maya (Junea)              Mexico Quintana Roo Tulum 1.532 2465 54 16.5 QRSS via Jim Coke e-mail Jan-07
80 Source de Bestouan               France ? ? 1.529 2461 0 0.0 UWS V18N6 1991
81 Peacock III Cave Syphon          U.S.A. Florida Suwannee 1.466 2359 210 64.0 M.Poucher 1996
82 Covol del Veci        Italy ? ? 1.455 2342 0 0.0 UWS V18N6 1991
83 Laguna Lagarto                   Mexico Quintana Roo Tulum 1.431 2303 36 11.0 QRSS via Jim Coke e-mail Jan-07
84 Cenote Chi Chan K'uk'um      Mexico Quintana Roo Tulum 1.387 2232 44 13.4 QRSS via Jim Coke e-mail Nov-08
85 Sistema Ak Tulum      Mexico Quintana Roo Tulum 1.386 2231 51 15.5 QRSS via Jim Coke e-mail Nov-08
86 Cenote Sole (Sunscape)       Mexico Quintana Roo Tulum 1.381 2223 33 10.1 QRSS via Jim Coke e-mail Feb-08
87 Sistema Rudy Sanchez              Mexico Quintana Roo Tulum 1.370 2204 61 18.6 QRSS via Jim Coke e-mail Jan-07
88 Sally Ward Cave                  U.S.A. Florida Wakulla 1.364 2195 350 106.7 Caves and Karst of Florida, 2008 NSS Convention Jul-08
89 Lineeater (Stevenson Spring)    U.S.A. Florida Hamilton 1.364 2195 60 18.3 Bryant, et.al. 1982
90 Sistema Ek Be                    Mexico Quintana Roo Tulum 1.358 2185 43 13.1 QRSS via Jim Coke e-mail Jan-07
91 Sistema Chakalal             Mexico Quintana Roo Tulum 1.348 2170 22 6.7 QRSS via Jim Coke e-mail Jan-07
92 Sistema Carrillo     Mexico Quintana Roo Tulum 1.332 2144 26 7.9 QRSS via Jim Coke e-mail Feb-08
93 Sistema Kachkalak Mexico Quintana Roo Tulum 1.317 2119 44 13.4 QRSS via Jim Coke e-mail Jan-10
94 Mirial Libya Cyrenaical Banghazi 1.315 2117 0 0.0 Atlas Great Caves of the World 1989
95 Cueva Aak Kimin                  Mexico Quintana Roo Tulum 1.243 2001 225 68.6 QRSS via Jim Coke e-mail Jan-07
96 Emergence du Ressell             France ? ? 1.243 2000 265 80.8 Buchaly, Waldbrener 1998
97 Laguna Nonec                     Mexico Quintana Roo Tulum 1.243 2000 35 10.7 QRSS via Jim Coke e-mail Jan-07
98 Sistema Yang kai                   Mexico Quintana Roo Tulum 1.224 1970 69 21.0 QRSS via Jim Coke e-mail Jan-07
99 Leopard Frog Cave                Canada ? ? 1.222 1966 0 0.0 Steve Worthington e-mail 05/03
100 Sistema Ixchel Mexico Quintana Roo Solidaridad 1.173 1887 220 67.0 QRSS via Jim Coke e-mail Jan-10
101 Sistema Chico Upstream              Mexico Quintana Roo Tulum 1.156 1861 59 18.0 QRSS via Jim Coke e-mail Jan-07
102 Sistema Zebra                    Mexico Quintana Roo Tulum 1.141 1837 56 17.1 QRSS via Jim Coke e-mail Jan-07
103 Eagles Nest       U.S.A. Florida Hernando 1.136 1828 315 96.0 Caves and Karst of Florida, 2008 NSS Convention Jul-08
104 Ellaville-Suwannacoochee System       U.S.A. Florida Suwannee 1.136 1828 155 47.2 Caves and Karst of Florida, 2008 NSS Convention Jul-08
105 Washington Blue Spring       U.S.A. Florida Washington 1.136 1828 0 0.0 Caves and Karst of Florida, 2008 NSS Convention Jul-08
106 Sistema Pierre's Hole         Mexico Quintana Roo Tulum 1.123 1807 40 12.2 QRSS via Jim Coke e-mail Apr-09
107 Guy James Cave      U.S.A. Tennessee Rutherford 1.079 1736 0 0 Jason Richards e-mail Nov-07
108 Cueva de La Atlantida (Tunnel )   (Lava Tube) Spain Canarias Island Lanzarote 1.072 1726 171 52.1 Catalogue of cavities from the Canary Islands Feb-08
109 Sistema Heder                    Mexico Quintana Roo Tulum 1.065 1714 80 24.4 QRSS via Jim Coke e-mail Jan-07
110 Sistema Yax Tun      Mexico Quintana Roo Tulum 1.056 1699 59 18.0 QRSS via Jim Coke e-mail Jul-08
111 Sistema Alomo      Mexico Quintana Roo Tulum 1.049 1689 30 9.1 QRSS via Jim Coke e-mail Jul-08
112 Twin Spring Cave       U.S.A. Florida Jackson 1.043 1679 102 31.1 Caves and Karst of Florida, 2008 NSS Convention Jul-08
113 Roubidoux Spring      U.S.A. Missouri Pulaski 1.040 1674 0 0.0 Jonathan Beard e-mail Mar-05
114 Source de Port Miou              France ? ? 1.038 1670 0 0.0 UWS V18N6 1991
115 Blue Hole Spring       U.S.A. Florida Jackson 1.000 1609 0 0.0 Caves and Karst of Florida, 2008 NSS Convention Jul-08