| USA DEEPEST CAVES Compiled by: Bob Gulden - April 10, 2008 | |||||||||
| Caves Mapped/Surveyed with 400+ feet of vertical | |||||||||
| Send updates and corrections to caverbob@aol.com | |||||||||
| The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com/home.htm Copyright 2008 NSS Geo2, Bob Gulden NSS#13188LF | |||||||||
| LENGTH | LENGTH | DEPTH | DEPTH | ||||||
| # | CAVE NAME | STATE | COUNTY | MILES | METERS | FEET | METERS | SOURCE | DATE |
| 1 | Sand Hill Multi Drop ? (cave not known to ACS) (3500) | Alabama | Jackson | 1.193 | 1920 | ? 620 | ? | Jerry Reeves e-mail / Loc not know to ACS / was a one man survey | 01/98 |
| 2 | Kazumura Cave (Lava Tube) | Hawaii | Hawaii | 40.700 | 65500 | 3614 | 1101.5 | HSS Newsletter N9P7 | 06/01 |
| 3 | Umi'i Manu System (Lava Tube) | Hawaii | Hawaii | 2.415 | 3887 | 1869 | 569.7 | Doug Medville | 02/00 |
| 4 | Hue Hue Cave (Lava Tube) | Hawaii | Hawaii | 6.711 | 10800 | 1623 | 494.7 | Stephan Kempe | 10/99 |
| 5 | Lechuguilla Cave | New Mexico | Eddy | 123.410 | 198609 | 1604 | 488.9 | Stan Allison e-mail | 2/8 |
| 6 | Virgil The Turtle's Great House Cave | Montana | Flathead | 1.020 | 1642 | 1586 | 483 | Bodenhamer, Ballensky, Rykwalder, Sainsbury via e-mail | 7/6 |
| 7 | Columbine Crawl | Wyoming | Teton | 2.301 | 3703 | 1551 | 472.7 | Warren Anderson e-mail | 01/01 |
| 8 | Hualalai Ranch Cave (Lava Tube) | Hawaii | Hawaii | 17.265 | 27785 | 1449 | 441.7 | Doug Medville e-mail | 3/7 |
| 9 | Emesine Cave (1881 System) (Lava Tube) | Hawaii | Hawaii | 12.890 | 20744 | 1433 | 436.8 | Don Coons e-mail | 03/02 |
| 10 | Great EX(pectations) Cave | Wyoming | Washakie | 7.854 | 12640 | 1408 | 429.2 | NSS News V44N6 (Peter Shifflett) | 06/86 |
| 11 | Omega System | Virginia | Wise | 24.670 | 39703 | 1263 | 385.0 | Benjamin Schwartz e-mail | 9/7 |
| 12 | Main Drain Cave | Utah | Cache | 1.450 | 2334 | 1227 | 374.0 | Jon Jasper, Brandon Kowallis, Dave Shurtz | 10/5 |
| 13 | Bigfoot Cave | California | Siskiyou | 12.400 | 19956 | 1205 | 367.3 | Steve Knutson | 12/90 |
| 14 | Neffs Canyon Cave | Utah | Salt Lake | 0.760 | 1223 | 1163 | 354.5 | www.caves.org/grotto/timpgrotto/ | 05/89 |
| 15 | Pahoa Cave(s) (segmentation??) (Lava Tube) | Hawaii | Hawaii | 9.942 | 16000 | 1150 | 350.5 | Lava Tube Flow e-mails | 5/5 |
| 16 | Manu Nui Lava Tube (Lava Tube) | Hawaii | Hawaii | 2.150 | 3460 | 1143 | 348.4 | NSS NEWS V65N10P21 | 9/7 |
| 17 | Ellisons Cave | Georgia | Walker | 12.127 | 19517 | 1063 | 324.0 | Georgia Underground V24N1 | 03/87 |
| 18 | Silvertip Cave System | Montana | Flathead | 3.166 | 5095 | 1052 | 321 | Alpine Karst | Sum77 |
| 19 | Carlsbad Cavern | New Mexico | Eddy | 27.530 | 44305 | 1035 | 315.5 | Stan Allison e-mail | 2/8 |
| 20 | Ambigua Cave (Lava Tube) | Hawaii | Hawaii | 1.096 | 1764 | 960 | 292.6 | Bob Richards e-mail | 11/4 |
| 21 | Bull Cave | Tennessee | Blount | 2.272 | 3656 | 924 | 281.6 | Mark Lassiter | 08/98 |
| 22 | Nielsons Well (Cave) | Utah | Cache | 1.260 | 2028 | 880 | 268.2 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 23 | Kauhako Crater (Vauhako) (Lava Pit) | Hawaii | Molokai | 0.000 | 0 | 865 | 263.7 | Earl Neller via Halliday(Water filled) | 7/97 |
| 24 | Na One Pit(Pit 6083,Pelee's Abyss) (Lava Pit) | Hawaii | Hawaii | 0.000 | 0 | 862 | 262.7 | Dave Bunnell | 04/94 |
| 25 | Big Brush Creek Cave | Utah | Uintah | 4.920 | 7918 | 858 | 261.5 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 26 | Rich Mountain Blowhole | Tennessee | Blount | 2.077 | 3343 | 840 | 256.0 | Tenn.Cave Survey | 02/03 |
| 27 | Papoose Cave | Idaho | Idaho | 3.250 | 5230 | 831 | 253.3 | Tom Miller e-mail | 09/98 |
| 28 | Chestnut Ridge Cave System | Virginia | Bath | 20.110 | 32364 | 804 | 245.1 | Phil Lucas e-mail | 7/7 |
| 29 | Sunray Cave | Montana | Flathead | 0.832 | 1339 | 801 | 244 | NSS Long and Deep Cave List | 1982 |
| 30 | Viva Silva Cave | Alaska | Heceta Island | 0.000 | 0 | 797 | 242.9 | Marcel LaPerriere e-mail | 08/98 |
| 31 | Kipuka Kanohina (Kula Kai Caverns) (Lava Tube) | Hawaii | Hawaii | 16.500 | 26554 | 762 | 232.3 | Bob Richards e-mail | 11/4 |
| 32 | Big Red Cave (Lava Tube) | Hawaii | Hawaii | 2.241 | 3607 | 760 | 231.6 | Doug Medville e-mail | 09/02 |
| 33 | Spanish Cave | Colorado | Custer | 1.090 | 1754 | 741 | 225.9 | Richard Rhinehart e-mail | 05/03 |
| 34 | Ka'eleku Caverns (Lava Tube) | Hawaii | Maui | 1.772 | 2852 | 738 | 224.9 | Bob Richards e-mail | 12/99 |
| 35 | Virgin Cave | New Mexico | Eddy | 1.894 | 3048 | 723 | 220.4 | Dave Belski e-mail | 03/03 |
| 36 | Sugar Run Cave System | Virginia | Giles | 22.500 | 36210 | 718 | 218.8 | VSS Long & Deep Cave Lists | 02/03 |
| 37 | Simmons Mingo - My Cave System | West Virginia | Rand./Pocahon. | 6.700 | 10783 | 683 | 208.2 | Bob Thrun | 06/82 |
| 38 | Dorton Knob Smoke Hole | Tennessee | Cumberland | 1.023 | 1646 | 660 | 201.2 | TCS - Chris Kerr | 01/96 |
| 39 | Little Brush Creek Cave | Utah | Uintah | 5.933 | 9548 | 658 | 200.6 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 40 | Lost Creek Siphon | Montana | Park | 0.189 | 304 | 650 | 198 | Jay Kennedy e-mail | 02/02 |
| 41 | SnowHole | Alaska | P.O.W. Island | 0.371 | 597 | 649 | 197.8 | David Ek | 08/96 |
| 42 | Wind Cave | South Dakota | Custer | 127.760 | 205610 | 646 | 196.9 | Rod Horrocks e-mail | 3/8 |
| 43 | Fossil Mnt.Ice Cave - Wind Cave System | Wyoming | Teton | 2.900 | 4667 | 644 | 196.3 | NSS Conv. 1988 | 05/88 |
| 44 | Flathead Alps Cave | Montana | Powell | 0.000 | 0 | 642 | 196 | Philip Rykwalder e-mail | 8/4 |
| 45 | Jewett II Cave | Tennessee | Cumberland | 3.349 | 5390 | 636 | 193.9 | Charles Clark | 07/86 |
| 46 | MeanderBelt Cave | Montana | Flathead | 0.723 | 1164 | 633 | 193 | Michael McEachem e-mail | 4/6 |
| 47 | Jewel Cave | South Dakota | Custer | 140.060 | 225405 | 632 | 192.6 | Stan Allison e-mail | 9/7 |
| 48 | Rawhide Horror Hole | Tennessee | Franklin | 1.136 | 1828 | 630 | 192.0 | Tenn.Cave Survey | 02/03 |
| 49 | Friars Hole Cave System | West Virginia | Green./Pocoho. | 45.539 | 73288 | 628 | 191.4 | Doug Medville | 05/03 |
| 50 | Doe Mountain Cave | Virginia | Giles | 2.712 | 4365 | 628 | 191.4 | Bill Balfour e-mail | 02/99 |
| 51 | El Capitan Pit | Alaska | P.O.W. Island | 0.211 | 340 | 625 | 190.5 | Georgia Underground V28N4 | 05/92 |
| 52 | Butler-Sinking Creek System | Virginia | Bath | 16.010 | 25766 | 624 | 190.2 | VSS Long Cave List | 02/03 |
| 53 | Lama Lua System (Lava Tube) | Hawaii | Hawaii | 3.447 | 5547 | 617 | 188.1 | Doug Medville e-mail | 04/04 |
| 54 | Jewett I Cave | Tennessee | Cumberland | 1.788 | 2878 | 615 | 187.5 | Charles Clark | 07/86 |
| 55 | Keala Cave (Lava Tube) | Hawaii | Hawaii | 5.410 | 8707 | 610 | 185.9 | Stephan Kempe, IUS Com. on Vol.Cave NL | 12/99 |
| 56 | MOS Cave / Obscure Magnificence (2697) | Alabama | Jackson | 1.001 | 1611 | 603 | 183.8 | Deep Caves of TAG, J.Stembel | 10/01 |
| 57 | Dulaneys Cave | Virginia | Giles | 4.440 | 7145 | 601 | 183.2 | VSS Long & Deep Cave Lists | 05/04 |
| 58 | Overholts Blowing Cave | West Virginia | Pocahontas | 2.970 | 4780 | 601 | 183.2 | Gary Storrick | 06/00 |
| 59 | The Great One Crack (Lava Crack) | Hawaii | Hawaii | 0.378 | 608 | 600 | 182.9 | HSS Newsletter N9P28 | 06/01 |
| 60 | Newton Cave | Washington | King | 0.000 | 0 | 600 | 182.9 | Gerry Petril | 01/94 |
| 61 | Ape Cave (Lava Tube) | Washington | Skamania | 2.500 | 3983 | 598 | 182.3 | Garry Petrie e-mail | 03/03 |
| 62 | Three Fingers Cave | New Mexico | Eddy | 3.700 | 5955 | 581 | 177.1 | Rocky Mountain Caving V8N3P22 | SUM91 |
| 63 | Cody Borehole (Lava Tube) | Oregon | Deschutes | 0.798 | 1284 | 580 | 176.8 | Garry Petrie | 04/94 |
| 64 | Greenhouse Cave | Montana | Flathead | 0.000 | 0 | 578 | 176 | Philip Rykwalder e-mail | 8/4 |
| 65 | Lewis and Clark Caverns | Montana | Jefferson | 1.906 | 3067 | 577 | 176 | The Explorer P34 - Bob Richards | 03/85 |
| 66 | Blowing in the Wind Cave | Alaska | P.O.W. Island | 1.144 | 1841 | 577 | 175.9 | Alaskan Caver V18N2P24, Carlene Allred | 04/98 |
| 67 | Scott Hollow Cave | West Virginia | Monroe | 27.000 | 43452 | 571 | 174.0 | WVASS Meeting at OTR | 09/01 |
| 68 | Tony Sinks - Cox Cave (78) | Alabama | Jackson | 2.367 | 3809 | 570 | 173.7 | Georgia Underground V32N4P37 | 09/96 |
| 69 | Sorcerer's Cave | Texas | Terrell | 2.181 | 3510 | 570 | 173.7 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 70 | Youngs Creek Blowhole | Tennessee | Franklin | 1.610 | 2591 | 568 | 173.1 | Deep Caves of TAG, John Stembel | 10/01 |
| 71 | Moon Ray Cave | Montana | Flathead | 0.000 | 0 | 567 | 173 | Philip Rykwalder e-mail | 8/4 |
| 72 | Scott's Barn Cave / Bloodstone (907) | Alabama | Jackson | 1.536 | 2472 | 563 | 171.6 | Tom Moss | 12/95 |
| 73 | Gary Self Pit (290) | Alabama | Jackson | 2.314 | 3724 | 560 | 170.7 | ACS | 08/87 |
| 74 | Kelly Ridge Cave | Tennessee | Blount | 0.852 | 1371 | 559 | 170.4 | TCS - Steve Pierce | 07/86 |
| 75 | Bloody Elbow Cave | Alabama | Madison | 1.202 | 1934 | 558 | 170.1 | Julie Schenck Brown | 5/6 |
| 76 | Hurricane Cave (Granite Boulder/Talus) | Colorado | Teller | 0.733 | 1180 | 553 | 168.6 | Cascade Caver V35N6P45 | 06/96 |
| 77 | Hells Below Cave | New Mexico | Eddy | 1.894 | 3048 | 550 | 167.6 | Dave Belski e-mail | 03/03 |
| 78 | Ain't No Cave (2312) | Alabama | Jackson | 0.742 | 1194 | 549 | 167.3 | Speleo Digest | 12/3 |
| 79 | Church Cave | California | Tulare | 3.996 | 6431 | 547 | 166.7 | David Engel e-mail | 09/99 |
| 80 | Paint Rock River Cave (2934) | Alabama | Jackson | 1.817 | 2924 | 539 | 164.3 | Deep Caves of TAG, John Stembel | 10/01 |
| 81 | Fern Cave (597) | Alabama | Jackson | 15.630 | 25154 | 536 | 163.4 | Fern Cave Project | 1995 |
| 82 | Luminary Pit | Tennessee | Bledsoe | 1.371 | 2206 | 535 | 163.1 | Buddy Lane | 07/86 |
| 83 | Shovel Eater Cave | West Virginia | Pendleton | 3.000 | 4828 | 534 | 162.8 | GVKS | 3/8 |
| 84 | The Kids Cave (2410) | Alabama | Jackson | 1.042 | 1677 | 530 | 161.5 | NSS News | 06/89 |
| 85 | Kaupulehu Crater Cave | Hawaii | Hawaii | 0.676 | 1088 | 530 | 161.5 | Peter Bosted e-mail | 1/6 |
| 86 | Hang 'Em High Cave | Tennessee | Marion | 3.665 | 5898 | 528 | 160.9 | NSS News V50N1P6-18 | 01/92 |
| 87 | Stolen Well / Davis Cove Cave (1518) | Alabama | Jackson | 1.291 | 2078 | 528 | 160.9 | Georgia Underground V29N3 | 09/92 |
| 88 | Kaupulehu System (Lava Tube) | Hawaii | Hawaii | 3.077 | 4952 | 527 | 160.6 | Doug Medville e-mail | 04/03 |
| 89 | Engle Double Pit (266) | Alabama | Jackson | 4.598 | 7400 | 520 | 158.5 | Alabama Cave Survey | 1975 |
| 90 | The Great Two Crack (Lava Crack) | Hawaii | Hawaii | 0.000 | 0 | 520 | 158.5 | HSS Newsletter Spring 2006 | 4/6 |
| 91 | Hellhole | West Virginia | Pendleton | 28.280 | 45512 | 519 | 158.2 | Gordon Brace e-mail GVKS | 9/7 |
| 92 | Arabica-Big Fatty Cave System | Alaska | Heceta Island | 1.412 | 2272 | 519 | 158.2 | Alaskan Caver V19N2P7 , Steve Lewis | 04/99 |
| 93 | Bullpasture Mountainside Cave | Virginia | Highland | 0.376 | 605 | 519 | 158.2 | Rick Lambert e-mail | 10/5 |
| 94 | Corkscrew Cave | Virginia | Tazewell | 4.060 | 6534 | 515 | 157.0 | 340' drop Bill Balfour e-mail | 05/04 |
| 95 | Goufffre | Tennessee | Cumberland | 2.131 | 3430 | 515 | 157.0 | TCS | 01/96 |
| 96 | Mossy Abyss | Alaska | Dall Island | 0.143 | 230 | 515 | 157.0 | Alaskan Caver | 6/26 |
| 97 | McBride's Cave (1345) | Alabama | Jackson | 1.753 | 2821 | 513 | 156.4 | Georgia Underground V32N4P38 | 09/96 |
| 98 | Small Cave (1096) | Alabama | Jackson | 0.957 | 1540 | 513 | 156.4 | Georgia Underground V24N1 | 03/87 |
| 99 | Wilkson Hollow Horror Hole | Tennessee | Franklin | 2.259 | 3636 | 512 | 156.1 | TCS | 01/96 |
| 100 | Elmos Canyon (1735) | Alabama | Jackson | 0.930 | 1497 | 512 | 156.1 | Georgia Underground V32N4P37 | 09/96 |
| 101 | Summers Double Pot (1538) | Alabama | Jackson | 0.636 | 1024 | 512 | 156.1 | Georgia Underground V32N4P37 | 09/96 |
| 102 | Rendezous Peak Cave | Wyoming | Teton | 0.258 | 415 | 512 | 156.1 | Caves of Wyoming | 03/76 |
| 103 | Doodlebug Hole / Blowing Cave (195) | Alabama | Jackson | 1.727 | 2779 | 510 | 155.4 | ACS | 04/80 |
| 104 | Potential Pit / Langston Cave (1558) | Alabama | Jackson | 0.758 | 1220 | 510 | 155.4 | Georgia Underground V29N3P18-19 | 09/92 |
| 105 | Lilburn Cave | California | Tulare | 20.810 | 33490 | 508 | 154.8 | Jed Mosenfelder e-mail | 1/6 |
| 106 | Sipapu Caverns | Arizona | Coconino | 0.000 | 0 | 504 | 153.6 | NSS Long and Deep Cave List | 1982 |
| 107 | Mad As A Wet Hen Pit (2147) | Alabama | Jackson | 0.860 | 1384 | 502 | 153.0 | Deep Caves of TAG, John Stembel | 10/01 |
| 108 | Siberian Sword Cave | Alaska | Heceta Island | 0.200 | 322 | 501 | 152.7 | Marcel LaPerriere e-mail | 08/98 |
| 109 | Wolfpen-Hollow Blowhole (Wind Cave) | West Virginia | Grant | 3.030 | 4876 | 500 | 152.4 | WVASS Database | 5/7 |
| 110 | Microwave-A-Hole System (1927) | Alabama | Jackson | 2.652 | 4268 | 500 | 152.4 | ACS | 03/85 |
| 111 | Cave of the Madonna | New Mexico | Eddy | 1.894 | 3048 | 500 | 152.4 | Dave Belski e-mail | 03/03 |
| 112 | Hickey Pot | Tennessee | Warren | 1.542 | 2482 | 500 | 152.4 | Tenn.Cave Survey | 02/03 |
| 113 | Stoned Well (1578) | Alabama | Jackson | 0.511 | 822 | 498 | 151.8 | Alabama Cave Survey | 03/85 |
| 114 | Fowler Pit 2 / Bleeding Ghyll Cave (655) | Alabama | Jackson | 0.918 | 1477 | 497 | 151.5 | Alabama Cave Survey | 03/85 |
| 115 | Greenhorn System (Boulder Cave) | California | Kern | 0.594 | 956 | 497 | 151.5 | NSS News V44N4P88 | 04/86 |
| 116 | Paiute (Black Abyss) Cave | Arizona | Coconino | 0.000 | 0 | 497 | 151.5 | Louise Hose (on Indian Land) | 10/89 |
| 117 | Ram's Horn Cave | Montana | Meagher | 0.000 | 0 | 496 | 151 | NSS Conv. | 1987 |
| 118 | Illiad / Odyessy Cave System (1568) | Alabama | Jackson | 1.663 | 2676 | 493 | 150.3 | ACS | 03/95 |
| 119 | Moonprobe Cave | Alaska | Dall Island | 0.133 | 214 | 493 | 150.3 | NSS News V53N2P34 | 02/95 |
| 120 | Turkey Roost Cave | West Virginia | Pocahontas | 2.841 | 4572 | 490 | 149.4 | WVASS Database | 5/7 |
| 121 | Bear-Hanna Cave (2100) | Alabama | Jackson | 1.161 | 1868 | 488 | 148.7 | Georgia Underground V32N4P38 | 06/96 |
| 122 | Organ Cave System | West Virginia | Greenbrier | 38.452 | 61882 | 486 | 148.1 | WVASS Database | 5/7 |
| 123 | P-Bar (PeBar) Cave | Wyoming | Big Horn | 1.851 | 2979 | 486 | 148.1 | Tomes | 1977 |
| 124 | Vanishing River Cave | New Mexico | 0.260 | 418 | 485 | 147.8 | Dave Belski e-mail | 03/03 | |
| 125 | Gap Cave System (Cudjo's) | Virginia | Lee | 13.719 | 22079 | 484 | 147.5 | Bob Gulden (CRF) | 1/8 |
| 126 | Rumbling Falls Cave. | Tennessee | Van Buren | 15.695 | 25259 | 474 | 144.5 | Marion O.Smith per TCS | 02/03 |
| 127 | Bad Medicine Cave | Wyoming | Big Horn | 1.910 | 3074 | 472 | 143.9 | Marc Ohms e-mail | 09/99 |
| 128 | Twenty Pound Tick Cave | Colorado | Garfield | 1.080 | 1738 | 469 | 143.0 | Rocky Mtn. Caving | SUM93 |
| 129 | Guy's Cave (1078) | Alabama | Jackson | 0.820 | 1320 | 468 | 142.6 | ACS | 1985 |
| 130 | Under the Wall Cave (Lava Tube) | Hawaii | Hawaii | 2.736 | 4403 | 464 | 141.4 | Doug Medville e-mail | 10/99 |
| 131 | Cairn Blowhole (Pit) (2290) | Alabama | Jackson | 1.515 | 2438 | 460 | 140.2 | Georgia Underground V32N4P38 | 09/96 |
| 132 | Baby Hog Horror Hole | Tennessee | Franklin | 0.663 | 1067 | 460 | 140.2 | TDCL | 09/92 |
| 133 | Deep Cave | New Mexico | Eddy | 0.601 | 967 | 460 | 140.2 | Dave Belski e-mail | 03/03 |
| 134 | Thunder Hole (1435) | Alabama | Jackson | 0.323 | 520 | 460 | 140.2 | Georgia Underground V32N4P38 | 09/96 |
| 135 | Polygamys End Cave | Utah | Cache | 0.138 | 222 | 459 | 139.9 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 136 | Sinking Cove Cave System | Tennessee | Franklin | 5.350 | 8610 | 457 | 139.3 | Rick Buice | 09/89 |
| 137 | Buckeye Cave (779) | Alabama | Jackson | 1.034 | 1664 | 457 | 139.3 | Georgia Underground V24N1 | 03/87 |
| 138 | Tumbling Rock Cave (171) (Saltpeter) | Alabama | Jackson | 6.022 | 9691 | 454 | 138.4 | Georgia Underground V32N4P38] | 09/96 |
| 139 | Blunder Hole (3333) | Alabama | Jackson | 0.720 | 1159 | 453 | 138.1 | Georgia Underground V31N4P3 | 11/95 |
| 140 | Wash Pot (1353) | Alabama | Jackson | 0.321 | 517 | 453 | 138.1 | Georgia Underground V29N3P18-19 | 09/92 |
| 141 | Sinuos System Cave | Alaska | Heceta Island | 0.000 | 0 | 453 | 138.1 | Marcel LaPerriere e-mail | 09/98 |
| 142 | Gilley Cave | Virginia | Lee | 4.545 | 7314 | 450 | 137.2 | VSS | 1978 |
| 143 | Hairy Pit / Flowing Spring Cave (847) | Alabama | Jackson | 1.515 | 2438 | 450 | 137.2 | Georgia Underground V32N4P38 | 09/96 |
| 144 | Spasm Chasm | Tennessee | Marion | 1.269 | 2042 | 450 | 137.2 | Tenn.Cave Survey | 02/03 |
| 145 | Laurel Caverns | Pennsylvania | Fayette | 3.090 | 4973 | 447 | 136.2 | Walt Hamm e-mail | 09/00 |
| 146 | Bird Horror Hole (2508) | Alabama | Jackson | 0.443 | 713 | 447 | 136.2 | Georgia Underground V29N3P18-19 | 09/92 |
| 147 | Walking Fern Pit (1598) | Alabama | Jackson | 0.376 | 605 | 447 | 136.2 | Georgia Underground V32N4P38 | 09/96 |
| 148 | Hummel's Cave | California | Tulare | 0.185 | 298 | 447 | 136.2 | Bob Richards | 01/90 |
| 149 | Memorial Day Cave | West Virginia | Pendleton | 11.250 | 18105 | 443 | 135.0 | GVKS - Peter Penczer | 3/8 |
| 150 | Triple Engle Pit (Gypsum) | New Mexico | De Baca | 1.544 | 2485 | 442 | 134.7 | Dave Belski e-mail | 03/03 |
| 151 | Real Well | Tennessee | Marion | 0.758 | 1220 | 441 | 134.4 | 1998 NSS Convention | 08/98 |
| 152 | Schoolhouse | West Virginia | Pendleton | 1.210 | 1947 | 439 | 133.8 | Gordon Brace e-mail | 10/5 |
| 153 | Whiteoak Blowhole | Tennessee | Blount | 1.153 | 1856 | 439 | 133.8 | Georgia Underground V32N4P38 | 09/96 |
| 154 | Shinaberry Cave | West Virginia | Pocahontas | 1.001 | 1611 | 435 | 132.6 | WVASS | 1987 |
| 155 | Bennett Cove Cave (2174) | Alabama | Jackson | 0.613 | 987 | 435 | 132.6 | ACS | 6/25 |
| 156 | Tears of the Turtle Cave | Montana | Flathead | 0.236 | 380 | 435 | 133 | NSS News V66N2P16 | 2/8 |
| 157 | French Creek Cave | Montana | Beaverhead | 1.831 | 2947 | 434 | 132 | Caves of Montana | 03/78 |
| 158 | Solution Rift | Tennessee | Marion | 0.758 | 1220 | 433 | 132.0 | TDCL | 09/92 |
| 159 | Jim Cave (273) | Alabama | Jackson | 0.585 | 941 | 432 | 131.7 | Georgia Underground V32N4P38 | 09/96 |
| 160 | Twenty Three Dollar Pit (996) | Alabama | Jackson | 0.380 | 612 | 432 | 131.7 | Georgia Underground V29N3P18-19 | 09/92 |
| 161 | Mill Hole (745) | Alabama | Jackson | 1.114 | 1793 | 431 | 131.4 | Georgia Underground V29N3P18-19 | 09/92 |
| 162 | Bucks Pocket Cave (432) | Alabama | Jackson | 1.136 | 1828 | 430 | 131.1 | ACS | 6/25 |
| 163 | El Capitan Cave | Alaska | P.O.W. Island | 2.390 | 3846 | 429 | 130.8 | NSS Caves Files - Dick Blenz | 10/5 |
| 164 | Crystal Palace Cave | Alaska | P.O.W. Island | 0.000 | 0 | 429 | 130.8 | NSS News | |
| 165 | Pig Hole | Virginia | Giles | 1.180 | 1899 | 428 | 130.5 | VSS | 02/89 |
| 166 | Scott Cave | West Virginia | Monroe | 1.000 | 1609 | 426 | 129.8 | Mike Dore | 10/85 |
| 167 | Better Forgotten Cave | Virginia | Highland | 0.947 | 1524 | 426 | 129.8 | BCCS | 07/95 |
| 168 | Dark Well (1945) | Alabama | Jackson | 0.439 | 707 | 421 | 128.3 | Georgia Underground V29N3P18-19 | 09/92 |
| 169 | Sewanee Plunge | Tennessee | Franklin | 0.947 | 1524 | 420 | 128.0 | Georgia Underground V32N4P38 | 09/96 |
| 170 | Reaper's Rockpile (gravity-slide cave) | Montana | Teton | 0.142 | 229 | 419 | 128 | Jason e-mail | 10/5 |
| 171 | Vast Caverns (1860) | Alabama | Jackson | 0.305 | 491 | 417 | 127.1 | Georgia Underground V29N3P18-19 | 09/92 |
| 172 | Sherwood Spring Cave | Tennessee | Franklin | 0.619 | 996 | 414 | 126.2 | Deep Caves of TAG, John Stembel | 10/01 |
| 173 | Falls (Panther) Creek (Lava) Cave (Lava Tube) | Washington | Skamania | 1.738 | 2797 | 413 | 125.9 | R.L.Crawford-Worlds Longest Lava Tubes | 1982 |
| 174 | Spence Cave | Virginia | Smyth | 0.000 | 0 | 413 | 125.9 | VSS | 1995 |
| 175 | The Cave That Summer Forgot | Montana | Flathead | 0.334 | 538 | 412 | 126 | NSS News V66N2P17 | 2/8 |
| 176 | Trice Hollow Pit (2012) | Alabama | Jackson | 0.762 | 1226 | 411 | 125.3 | Georgia Underground V29N3P18-19 | 09/92 |
| 177 | LilyGuard Cave | Montana | Judith Basin | 0.410 | 660 | 410 | 125 | Rick Brinkman e-mail | 05/03 |
| 178 | Will's Welch Well (1748) | Alabama | Jackson | 0.253 | 407 | 410 | 125.0 | Deep Caves of TAG, John Stembel | 10/01 |
| 179 | Montague Cave (379) | Alabama | Jackson | 4.220 | 6791 | 406 | 123.7 | Deep Caves of TAG, John Stembel | 10/01 |
| 180 | Wooden Ladder Cave | Hawaii | Hawaii | 0.758 | 1220 | 406 | 123.7 | Doug Medville | 11/6 |
| 181 | Little Red River Cave (Lava Tube) | Washington | Skamania | 0.641 | 1032 | 406 | 123.7 | Cascade Caver V35N6P45 | 06/96 |
| 182 | Sub-Solomon Cave | Tennessee | Franklin | 0.711 | 1144 | 405 | 123.4 | TCS | 02/03 |
| 183 | Weeki Wachee Spring (Under Water) | Florida | ? | 1.269 | 2042 | 403 | 122.8 | http://tampadiving.com/weekiwachee/ | 9/7 |
| 184 | Water Well (1747) | Alabama | Jackson | 0.554 | 892 | 402 | 122.5 | Georgia Underground V29N3P18-19 | 09/92 |
| 185 | Wet Cave / Above (Well) Wet Cave | Tennessee | Franklin | 1.414 | 2276 | 401 | 122.2 | Speleonews V34N3 | 06/90 |
| 186 | Fort-Pebbles Cave | Tennessee | Franklin | 1.234 | 1986 | 401 | 122.2 | Tenn.Cave Survey | 02/03 |
| 187 | Russell Cave (169) | Alabama | Jackson | ||||||