Caves Mapped/Surveyed with 350+ feet of vertical
Compiled by: Paul Burger – 04/26/2026

Send updates and corrections to Cavemonpaul at hotmail.com

Copyright 2026 NSS Geo2, Paul Burger NSS 26452, FE, CM
Do not ask for cave locations, I will not give them out.

Type: CT=Chalk & Tufa & Laterite , C=Conglomerate & Schist, G=Gypsum, L=Lava, Q=Sandstone & Quartzite, S=Salt, T=Talus, Boulder & Granite, UW=Underwater

TYPE	RANK	CAVE NAME	COUNTRY	STATE	COUNTY	Length (mi)	Length (m)	Depth (ft)	Depth(m)	SOURCE	DATE
L	1	Delissea Cave System	USA	Hawaii	Hawaii	40.59	65323.3	4115	1254.3	Peter Bosted e-mail	2025-05
L	2	Kazumura Cave	USA	Hawaii	Hawaii	40.70	65500	3613.8	1101.5	HSS Newsletter N9P7	2016-06
-	3	Tears of the Turtle Cave	USA	Montana	Flathead	1.88	3025.6	2477	755	Jason Ballensky & Peter Johnson e-mail	2024-08
L	4	Umi'i Manu System	USA	Hawaii	Hawaii	2.42	3886.6	1869.1	569.7	Doug Medville	2000-02
	5	Bobsled Cave	USA	Montana	Flathead	1.12	1802.5	1842	561.4	Jason Ballensky e-mail	2025-08
L	6	Hue Hue (Manini Owali) Cave	USA	Hawaii	Hawaii	6.71	10800.3	1623	494.7	Stephan Kempe	1999-10
-	7	Lechuguilla Cave (C.C.N.P.)	USA	New Mexico	Eddy	152.11	244790	1588.6	484.2	Max Wissak email	2023-01
-	8	Virgil The Turtle's Great House Cave	USA	Montana	Flathead	1.02	1644.75	1586	483.41	Bodenhamer, Ballensky, Rykwalder, Sainsbury via e-mail	2016-07
-	9	Columbine Crawl	USA	Wyoming	Teton	2.30	3703.1	1551	472.74	Warren Anderson e-mail	2016-01
L	10	Hualalai Ranch Cave	USA	Hawaii	Hawaii	15.05	24217	1449.1	441.7	Doug Medville e-mail	2016-03
L	11	Emesine Cave (1881 System)	USA	Hawaii	Hawaii	12.89	20744.4	1433.1	436.8	Don Coons e-mail	2016-03
-	12	Great EX(pectations) Cave	USA	Wyoming	Washakie	7.85	12639.79	1408	429.16	NSS News V44N6 (Peter Shifflett)	1986-06
-	13	Loaded Dice Cave	USA	Wyoming	Teton	1.48	2380.5	1403.2	427.6	Bridger-Teton Cave Project	2024-04
-	14	Main Drain Cave	USA	Utah	Cache	2.53	4071.64	171	398.07	Tony Grove Cave Project	2016-08
-	15	Main Drain Cave	USA	Utah	Cache	2.53	4071.6	1305.9	398.04	Jon Jasper email	2023-09
-	16	Omega System	USA	Virginia	Wise	29.43	47362.99	1263	384.96	Mike Ficco e-mail	2016-06
-	17	Bigfoot Cave	USA	California	Siskiyou	16.25	26151.84	1205	367.28	Scott Linn e-mail	2016-10
-	18	Neffs Canyon Cave	USA	Utah	Salt Lake	0.76	1223.1	1163	354.48	www.caves.org/grotto/timpgrotto/	1989-05
L	19	Pahoa Cave(s) (segmentation??)	USA	Hawaii	Hawaii	9.94	16000.1	1149.9	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.	2016-05
L	20	Manu Nui Lava Tube	USA	Hawaii	Hawaii	2.15	3460.1	1143	348.4	NSS NEWS V65N10P21	2016-09
-	21	Ellisons Cave	USA	Georgia	Walker	12.13	19516.51	1063	324	Georgia Underground V24N1	1987-03
L	22	Ainahou Ranch Cave	USA	Hawaii	Hawaii	4.42	7110	1059.7	323	Stephan Kempe e-mail	2019-04
-	23	Carlsbad Cavern (C.C.N.P.)	USA	New Mexico	Eddy	39.50	63569.09	1035	315.47	Vidio on liine	2019-12
L	24	Keamoku	USA	Hawaii	Hawaii	4.12	6623	1030	314	Gerald Favre, HSS no 35, pg 13, 2014	2014-01
-	25	Tickle Me Turtle Cave (Portal 3)	USA	Montana	Flathead	0.76	1224.71	1027	313.03	Jason Ballensky e-mail	2016-08
L	26	Kahawaihapapa Cave	USA	Hawaii	Maui	0.59	943	1023.6	312	Bob Richards e-mail	2020-08
-	27	Silvertip Cave System	USA	Montana	Flathead	10.16	16350.94	997.4	304	Jason Ballensky e-mail	2022-05
-	28	Scapegoat Cave System (Green Fork Falls Cave - Kathys Icebox Cave)	USA	Montana	Lewis & Clark	3.30	5310.84	977	297.79	Michael McEachern FB	2021-10
-	29	Jewett Three Cave	USA	Tennessee	Cumberland	4.00	6437.4	946	288.3	TCS	2024-01
L	30	Kipuka Kanohina Cave (Kula Kai Caverns)	USA	Hawaii	Hawaii	26.10	42010	944.9	288	Kanohina Data Manager - Tomislav Gracanin e-mail	2019-06
-	31	Bull Cave	USA	Tennessee	Blount	2.27	3656.43	924	281.64	Mark Lassiter	1998-08
-	32	Nielsons Well / Cave	USA	Utah	Cache	1.42	2285.27	880	268.22	www.caves.org/grotto/timpgrotto/	2016-01
L	33	Kauhako Crater (Vauhako) (Lava Pit)	USA	Hawaii	Molokai	0.00	0	865.2	263.7	Earl Neller via Halliday(Water filled)	1997-07
L	34	Na One Pit(Pit 6083,Pelee's Abyss) (Lava Pit)	USA	Hawaii	Hawaii	0.00	0	861.9	262.7	Dave Bunnell	1994-04
-	35	Big Brush Creek Cave	USA	Utah	Uintah	6.16	9913.56	858	261.52	Matt Paulson FB	2022-01
-	36	Sunray - Sunset Cave System	USA	Montana	Flathead	1.67	2700.2	846	257.9	Jason Ballensky e-mail	2023-08
-	37	Rich Mountain Blowhole	USA	Tennessee	Blount	2.19	3516.42	840	256.03	Tenn.Cave Survey	2015-02
L	38	Hookena Civil Defense Cave	USA	Hawaii	Hawaii	5.86	9436	839.9	256	Peter Bosted e-mail	2023-12
-	39	Papoose Cave	USA	Idaho	Idaho	3.25	5230.37	833	253.9	Daryl Greaser e-mail	2019-01
-	40	Jewel Cave (N.M.)	USA	South Dakota	Custer	220.50	354860.35	832.1	253.62	Adam Weaver email	2024-05
-	41	Chestnut Ridge Cave System	USA	Virginia	Bath	22.06	35507	813.6	248	BCCS	2019-10
-	42	Fossil Mtn.Ice Cave - Wind Cave System	USA	Wyoming	Teton	5.27	8481.2	803	244.8	Garry Petrie e-mail	2025-08
-	43	Vive Silva Cave	USA	Alaska	Heceta Island	0.00	0	797	242.93	Marcel LaPerriere e-mail	1998-08
	44	Fast and Heavy Cave	USA	Alaska	Prince of Wales Is	0.29	466.7	771	235	Christian DeCelle	2024-07
L	45	Big Red Cave	USA	Hawaii	Hawaii	2.24	3606.5	759.8	231.6	Doug Medville e-mail	2016-09
-	46	Spanish Cave	USA	Colorado	Custer	1.09	1754.18	741	225.86	Richard Rhinehart e-mail	2016-05
L	47	Ka'eleku Caverns	USA	Hawaii	Maui	1.77	2851.8	737.9	224.9	Bob Richards e-mail	1999-12
-	48	Hellhole System	USA	West Virginia	Pendleton	43.60	70167.4	737	224.64	GVKS	2020-02
-	49	Sugar Run Cave System	USA	Virginia	Giles	22.55	36291	718	218.85	VSS	2015-02
-	50	Simmons Mingo - My Cave System	USA	West Virginia	Rand./Pocahon.	6.70	10782.6	683	208.18	Bob Thrun	1982-06
	51	Don Quixotes Gross Venture	USA	Wyoming	Sublette	0.54	874.8	680.15	207.31	Bridget-Teton Cave Project	2025-08
-	52	Dorton Knob Smoke Hole	USA	Tennessee	Cumberland	1.24	2002.02	669	203.9	Mike Rodgers email	2023-04
-	53	Overholts Blowing Cave	USA	West Virginia	Pocahontas	7.81	12570.59	666	203	Gary Storrick	2016-01
-	54	Little Brush Creek Cave	USA	Utah	Uintah	6.25	10058.4	858	202	Matt Paulson FB	2022-07
-	55	Snowhole	USA	Alaska	P.O.W. Island	0.65	1056.7	911	198.73	Christian DeCelle email	2024-07
	56	Buttersweet Cave	USA	Alaska	Prince of Wales Is	0.33	531	652	198.7	Christian DeCelle	2024-07
-	57	Lost Creek Siphon	USA	Montana	Park	0.19	304.17	650	198.12	Jay Kennedy e-mail	2015-02
L	58	Beach Park Cave	USA	Hawaii	Hawaii	4.71	7572	649.6	198	Peter Bosted e-mail	2018-08
-	59	Wind Cave (N.P.)	USA	South Dakota	Custer	169.53	270498.5	646.8	197.2	Hollie Lybarger-Pucket email	2026-02
-	60	Fort Stanton Cave	USA	New Mexico	Lincoln	56.23	90493.4	646.2	196.9	Lee H.Skinner e-mail	2025-10
-	61	Butler-Sinking Creek System	USA	Virginia	Bath	18.06	29064.75	644.3	196.38	Tont Canike email	2016-09
-	62	Flathead Alps Cave	USA	Montana	Powell	0.09	150	642	195.68	Philip Rykwalder e-mail	2016-08
-	63	Jewett Two Cave	USA	Tennessee	Cumberland	3.35	5389.69	636	193.85	Charles Clark	1986-07
-	64	MeanderBelt Cave	USA	Montana	Flathead	0.72	1163.56	633	192.94	Michael McEachem e-mail	2017-04
-	65	Rawhide Horror Hole	USA	Tennessee	Franklin	1.14	1828.21	630	192.02	Tenn.Cave Survey	2015-02
-	66	Doe Mountain Cave	USA	Virginia	Giles	2.71	4364.54	628	191.41	Bill Balfour e-mail	1999-02
-	67	El Capitan Pit	USA	Alaska	P.O.W. Island	0.21	339.57	625	190.5	Georgia Underground V28N4	1992-05
L	68	Lama Lua System	USA	Hawaii	Hawaii	3.45	5547.4	623	189.9	Doug Medville e-mail	2017-04
-	69	Double Bopper Cave	USA	Arizona	Coconino	42.70	68719	618	188.37	Jason Ballensky e-mail	2024-11
-	70	Jewett Cave	USA	Tennessee	Cumberland	1.79	2877.51	615	187.45	Charles Clark	1986-07
-	71	Friars Hole Cave System	USA	West Virginia	Green./Pocoho.	52.56	84587.1	613	186.84	Bill Storage email	2024-03
L	72	Keala Cave	USA	Hawaii	Hawaii	5.41	8706.6	609.9	185.9	Stephan Kempe, IUS Com. on Vol.Cave NL	1999-12
L	73	Ape Cave	USA	Washington	Skamania County	2.57	4141.5	606	184.8	Garry Petrie e-mail	2023-01
-	74	Devils Hole	USA	Nevada	Nye	0.00	0	605	184.4	Dan Smith FB	2022-07
-	75	Thompson Valley Cave System (Corkscrew Cave)	USA	Virginia	Tazewell	8.60	13841	603.7	184	VSS	2019-11
-	76	MOS Cave / Obscure Magnificence (2697)	USA	Alabama	Jackson	1.00	1610.95	603	183.79	Deep Caves of TAG, J.Stembel	2016-10
-	77	Dulaneys Cave	USA	Virginia	Giles	4.44	7138	601	183.18	VSS	2016-05
	78	Serendipity Pit	USA	Tennessee	Cumberland	0.57	914.4	600	182.9	TCS-Moni	2025-08
L	79	The Great One Crack (Lava Crack)	USA	Hawaii	Hawaii	0.44	706.5	600.1	182.9	NSS NEWS V68N12P9	2015-02
-	80	Double Date Cave	USA	Montana	Flathead	1.54	2478.39	582	177.39	Jason Ballensky e-mail	2016-12
-	81	Three Fingers Cave	USA	New Mexico	Eddy	3.70	5954.57	581	177.09	Rocky Mountain Caving V8N3P22	1991-07
L	82	Cody Borehole	USA	Oregon	Deschutes	0.80	1284.3	580.1	176.8	Garry Petrie	1994-04
-	83	Memorial Day Cave	USA	West Virginia	Pendleton	29.03	46719.26	579.2	176.54	GVKS	2020-12
-	84	Greenhouse Cave	USA	Montana	Flathead	0.00	0	578	176.17	Philip Rykwalder e-mail	2016-08
-	85	Lewis and Clark Caverns	USA	Montana	Jefferson	1.91	3067.41	577	175.87	The Explorer P34 - Bob Richards	1985-03
-	86	Blowing in the Wind Cave	USA	Alaska	P.O.W. Island	1.14	1841.09	577	175.87	Alaskan Caver V18N2P24, Carlene Allred	1998-04
-	87	Youngs Creek Blowhole	USA	Tennessee	Franklin	1.70	2730.4	576	175.6	Gerald Moni email	2025-07
-	88	Virgin Cave	USA	New Mexico	Eddy	4.48	7207.9	573.4	174.8	Paul Burger	2026-03
-	89	Scott Hollow Cave	USA	West Virginia	Monroe	29.50	47475.65	571	174.04	WVASS Spring Meeting	2016-05
-	90	Tony Sinks - Cox Cave (78)	USA	Alabama	Jackson	2.37	3809.32	570	173.74	Georgia Underground V32N4P37	1996-09
-	91	Sorcerer's Cave	USA	Texas	Terrell	2.18	3509.98	570	173.74	Texas Speleological Survey via Jerry Atkinson e-mail	2016-01
L	92	Keokeo 16S-Y	USA	Hawaii	Hawaii	1.37	2206	567.6	173	Peter Bosted e-mail	2018-08
-	93	Moon Ray Cave	USA	Montana	Flathead	0.00	0	567	172.82	Philip Rykwalder e-mail	2016-08
-	94	Scott's Barn Cave / Bloodstone (907)	USA	Alabama	Jackson	1.54	2471.95	563	171.6	Tom Moss	1995-12
L	95	Ka'awaloa	USA	Hawaii	Hawaii	2.02	3247	561	171	Peter Bosted e-mail	2018-08
-	96	Gary Self Pit (290)	USA	Alabama	Jackson	2.31	3724.02	560	170.69	ACS	1987-08
-	97	Kelly Ridge Cave	USA	Tennessee	Blount	0.85	1371.16	559	170.38	TCS - Steve Pierce	1986-07
-	98	Bloody Elbow Cave	USA	Alabama	Madison	1.20	1934.43	558	170.08	Julie Schenck Brown	2016-05
-	99	Great Savannah Cave System	USA	West Virginia	Greenbrier	55.01	88530.1	550.6	167.8	Nick Socky email	2024-10
-	100	Hells Below Cave	USA	New Mexico	Eddy	1.89	3048.1	550	167.64	Dave Belski e-mail	2016-03
-	101	Ain't No Cave (2312)	USA	Alabama	Jackson	0.74	1194.13	549	167.34	Speleo Digest	2015-02
-	102	Church Cave	USA	California	Fresno	4.00	6430.94	547	166.73	David Engel e-mail	1999-09
-	103	Paint Rock River Cave (2934)	USA	Alabama	Jackson	1.82	2924.18	539	164.29	Deep Caves of TAG, John Stembel	2016-10
-	104	Fern Cave (597)	USA	Alabama	Jackson	15.63	25154.05	536	163.37	Fern Cave Project	2017-06
-	105	Luminary Pit	USA	Tennessee	Bledsoe	1.37	2206.41	535	163.07	Buddy Lane	1986-07
-	106	The Kids Cave (2410)	USA	Alabama	Jackson	1.04	1676.94	530	161.54	NSS News	1989-06
L	107	Kaupulehu Crater Cave (part of Manu Nui ?)	USA	Hawaii	Hawaii	0.68	1087.9	529.9	161.5	Peter Bosted e-mail	2016-01
-	108	Hang'em High Cave	USA	Tennessee	Marion	3.66	5890.2	528	160.93	TCS-Moni	2025-08
-	109	Stolen Well / Davis Cove Cave (1518)	USA	Alabama	Jackson	1.29	2077.66	528	160.93	Georgia Underground V29N3	1992-09
L	110	Kaupulehu System	USA	Hawaii	Hawaii	2.71	4367	526.9	160.6	Doug Medville e-mail	2020-12
-	111	Wind Cave (Wolfpen-Hollow Blowhole)	USA	West Virginia	Grant	5.17	8320.31	526	160.32	WVASS Database	2016-05
-	112	Grunge Plunge	USA	Tennessee	Washington	1.29	2080	526	160.32	Gerald Moni email	2025-07
-	113	Fulford Cave	USA	Colorado	Eagle	1.23	1983.5	524.9	160	Rocky Mtn. Caving P13	1989-08
-	114	Engle Double Pit (266)	USA	Alabama	Jackson	4.60	7399.76	520	158.5	Alabama Cave Survey	2017-05
-	115	Arabica-Big Fatty Cave System	USA	Alaska	Heceta Island	1.41	2272.39	519	158.19	Alaskan Caver V19N2P7 , Steve Lewis	1999-04
-	116	Bullpasture Mountainside Cave	USA	Virginia	Highland	0.38	605.11	519	158.19	Rick Lambert e-mail	2016-10
L	117	The Great Two Crack (Lava Crack)	USA	Hawaii	Hawaii	0.30	484.4	518	157.9	NSS NEWS V68N12P15	2015-02
L	118	Many Wall Cave	USA	Hawaii	Hawaii	1.93	3106	515.1	157	Doug Medville, HSS no. 32, pg 6, 2012	2021-01
-	119	Gouffre	USA	Tennessee	Cumberland	2.13	3429.51	515	156.97	TCS	1996-01
-	120	Mossy Abyss	USA	Alaska	Dall Island	0.14	230.14	515	156.97	Alaskan Caver	2016-06
-	121	McBride's Cave (1345)	USA	Alabama	Jackson	1.75	2821.18	513	156.36	Georgia Underground V32N4P38	1996-09
-	122	Small Cave (1096)	USA	Alabama	Jackson	0.96	1540.14	513	156.36	Georgia Underground V24N1	1987-03
-	123	Wilkson Hollow Horror Hole	USA	Tennessee	Franklin	2.26	3635.51	512	156.06	TCS	1996-01
-	124	Elmos Canyon (1735)	USA	Alabama	Jackson	0.93	1496.69	512	156.06	Georgia Underground V32N4P37	1996-09
-	125	Summers Double Pot (1538)	USA	Alabama	Jackson	0.64	1023.54	512	156.06	Georgia Underground V32N4P37	1996-09
-	126	Rendezous Peak Cave	USA	Wyoming	Teton	0.26	415.21	512	156.06	Caves of Wyoming	1976-03
-	127	Potential Pit / Langston Cave (1558)	USA	Alabama	Jackson	0.76	1219.88	510	155.45	Georgia Underground V29N3P18-19	1992-09
-	128	Newton Cave	USA	Washington	King	0.19	304.17	510	155.45	David Mischke e-mail	2016-05
-	129	Baby Hog Horror Hole	USA	Tennessee	Franklin	0.76	1219.2	510	155.4	TCS-Moni	2025-08
-	130	Lilburn Cave (N.P.)	USA	California	Tulare	22.17	35679	508	154.84	Jed Mosenfelder e-mail	2019-01
-	131	Sipapu Caverns	USA	Arizona	Coconino	0.00	0	504	153.62	NSS Long and Deep Cave List	2017-06
-	132	Mad As A Wet Hen Pit (2147)	USA	Alabama	Jackson	0.86	1384.04	502	153.01	Deep Caves of TAG, John Stembel	2016-10
-	133	Siberian Sword Cave	USA	Alaska	Heceta Island	0.20	321.87	501	152.7	Marcel LaPerriere e-mail	1998-08
-	134	Microwave-A-Hole System (1927)	USA	Alabama	Jackson	2.65	4267.98	500	152.4	ACS	1985-03
-	135	Cave of the Madonna	USA	New Mexico	Eddy	1.89	3048.1	500	152.4	Dave Belski e-mail	2016-03
-	136	Hickey Pot	USA	Tennessee	Warren	1.54	2481.61	500	152.4	Tenn.Cave Survey	2015-02
-	137	Stoned Well (1578)	USA	Alabama	Jackson	0.51	822.37	498	151.79	Alabama Cave Survey	1985-03
-	138	Fowler Pit 2 / Bleeding Ghyll Cave (655)	USA	Alabama	Jackson	0.92	1477.38	497	151.49	Alabama Cave Survey	1985-03
-	139	Ram's Horn Cave	USA	Montana	Meagher	0.90	1448.41	496	151.18	NSS Conv.	2017-06
UW	140	Phantom Springs Cave	USA	Texas	Jeff Davis	1.95	3135.5	493	150.27	Texas Speleological Survey via Jerry Atkinson e-mail	2016-01
-	141	Illiad / Odyessy Cave System (1568)	USA	Alabama	Jackson	1.66	2676.34	493	150.27	ACS	1995-03
-	142	Moonprobe Cave	USA	Alaska	Dall Island	0.13	214.04	493	150.27	NSS News V53N2P34	1995-02
-	143	Gap Cave System (Cudjo's) (C.G.N.H.P.)	USA	Virginia	Lee	19.88	32000	491	149.66	Bob Gulden (CRF)	2019-04
-	144	Sewanee Plunge	USA	Tennessee	Franklin	0.82	1323.1	490	149.4	TCS-Moni	2025-08
-	145	Turkey Roost Cave	USA	West Virginia	Pocahontas	2.84	4572.15	490	149.35	WVASS Database	2016-05
-	146	Bear-Hanna Cave (2100)	USA	Alabama	Jackson	1.16	1868.45	488	148.74	Georgia Underground V32N4P38	1996-06
-	147	Organ Cave System	USA	West Virginia	Greenbrier	38.45	61882.5	486	148.13	WVASS Database	2016-05
-	148	P-Bar (PeBar) Cave	USA	Wyoming	Big Horn	1.85	2978.9	486	148.13	Tomes	2017-05
-	149	Vanishing River Cave	USA	New Mexico	-	0.26	418.43	485	147.83	Dave Belski e-mail	2016-03
-	150	Laurel Caverns	USA	Pennsylvania	Fayette	4.14	6666.89	476	145.08	Ryan Maurer e-mail	2022-07
-	151	Rumbling Falls Cave.	USA	Tennessee	Van Buren	16.09	25895.95	474	144.48	Marion O.Smith per TCS	2015-02
-	152	Bad Medicine Cave	USA	Wyoming	Big Horn	1.91	3073.85	472	143.87	Marc Ohms e-mail	1999-09
-	153	Spasm Chasm	USA	Tennessee	Marion	1.44	2319.06	472	143.87	Tenn.Cave Survey	2015-02
-	154	Roaring River	USA	Missouri	Barry	0.43	687	472	143.87	FB	2021-11
-	155	Keystone River Cave	USA	Tennessee	Van Buren	3.63	5840.31	471	143.56	Tenn.Cave Survey	2015-02
-	156	Tanglefoot Cave	USA	Maryland	Allegany	2.12	3418.25	470	143.26	Corey Hackley e-mail	2023-10
-	157	Twenty Pound Tick Cave	USA	Colorado	Garfield	1.08	1738.09	469	142.95	Rocky Mtn. Caving	1993-07
-	158	Guy's Cave (1078)	USA	Alabama	Jackson	0.82	1319.66	468	142.65	ACS	2017-06
-	159	Hole 19	USA	Maryland	Allegany	1.77	2848.54	466	142.04	Donnie Cams FB	2020-12
L	160	Under the Wall Cave	USA	Hawaii	Hawaii	2.74	4403.2	463.9	141.4	Doug Medville e-mail	1999-10
-	161	Seabolt-Spence Cave System	USA	Virginia	Smyth	0.59	945	462.6	141	VSS	2019-11
-	162	Cairn Blowhole (Pit) (2290)	USA	Alabama	Jackson	1.52	2438.16	460	140.21	Georgia Underground V32N4P38	1996-09
-	163	Deep Cave	USA	New Mexico	Eddy	0.60	967.22	460	140.21	Dave Belski e-mail	2016-03
-	164	Thunder Hole (1435)	USA	Alabama	Jackson	0.32	519.82	460	140.21	Georgia Underground V32N4P38	1996-09
L	165	Middle Hapuu	USA	Hawaii	Hawaii	1.30	2098.6	460	140.2	Peter Bosted e-mail	2016-09
-	166	Polygamys End Cave	USA	Utah	Cache	0.14	222.09	459	139.9	www.caves.org/grotto/timpgrotto/	2016-01
-	167	Chan Chasm	USA	Tennessee	Franklin	0.64	1035.5	457	139.3	Moni email	2026-04
-	168	Sinking Cove Cave	USA	Tennessee	Franklin	5.35	8609.99	457	139.29	Rick Buice	1989-09
-	169	Buckeye Cave (779)	USA	Alabama	Jackson	1.03	1664.06	457	139.29	Georgia Underground V24N1	1987-03
-	170	Gourdneck Cave	USA	Tennessee	Marion	3.63	5846.1	456	138.99	Gerald Moni email	2025-07
-	171	Tumbling Rock Cave (171)	USA	Alabama	Jackson	6.02	9691.47	454	138.38	Georgia Underground V32N4P38]	1996-09
-	172	Blunder Hole (3333)	USA	Alabama	Jackson	0.72	1158.73	453	138.07	Georgia Underground V31N4P3	1995-11
-	173	Wash Pot (1353)	USA	Alabama	Jackson	0.32	516.6	453	138.07	Georgia Underground V29N3P18-19	1992-09
-	174	Sinuos System Cave	USA	Alaska	Heceta Island	0.00	0	453	138.07	Marcel LaPerriere e-mail	1998-09
	175	Rustys Resounding Rock Drop	USA	Tennessee	Franklin	0.41	659.6	452	137.8	TCS-Moni	2025-08
-	176	Gilley Cave	USA	Virginia	Lee	4.55	7314.47	450	137.16	VSS	2017-05
-	177	Hairy Pit / Flowing Spring Cave (847)	USA	Alabama	Jackson	1.52	2438.16	450	137.16	Georgia Underground V32N4P38	1996-09
-	178	Doodlebug Hole / Blowing Cave (195)	USA	Alabama	Jackson	1.39	2243.43	450	137.16	ACS	2016-05
-	179	Real Well	USA	Tennessee	Marion	0.73	1181.4	449	136.9	TCS-Moni	2025-08
L	180	Lower Hualalai Ranch Cave	USA	Hawaii	Hawaii	2.19	3525	448.2	136.6	Nevin Davis, HSS No. 19, Pg 13, 2006. Segment length calculated by Doug Medville and John Rosenfeld from survey files in 2018	2021-01
-	181	Bird Horror Hole (2508)	USA	Alabama	Jackson	0.44	712.94	447	136.25	Georgia Underground V29N3P18-19	1992-09
-	182	Walking Fern Pit (1598)	USA	Alabama	Jackson	0.38	605.11	447	136.25	Georgia Underground V32N4P38	1996-09
-	183	Hummel's Cave	USA	California	Fresno	0.19	297.73	447	136.25	Bob Richards	1990-01
L	184	Redemption Cave	USA	Hawaii	Hawaii	1.71	2749	446.2	136	Doug Medville e-mail	2018-03
G	185	Triple Engle Pit	USA	New Mexico	De Baca	1.54	2485	442	134.7	Dave Belski e-mail	2016-03
-	186	Schoolhouse	USA	West Virginia	Pendleton	1.65	2654.73	439	133.81	Gordon Brace e-mail	2016-10
-	187	Whiteoak Blowhole	USA	Tennessee	Blount	1.15	1855.57	439	133.81	Georgia Underground V32N4P38	1996-09
-	188	Mill Creek Crystal Cave	USA	Montana	Park	1.35	2172.61	435	132.59	James Cummins e-mail	2016-08
-	189	Shinaberry Cave	USA	West Virginia	Pocahontas	1.00	1610.95	435	132.59	WVASS	2017-06
-	190	Bennett Cove Cave (2174)	USA	Alabama	Jackson	0.61	986.53	435	132.59	ACS	2016-06
-	191	French Creek Cave	USA	Montana	Beaverhead	1.83	2946.71	434	132.28	Caves of Montana	1978-03
-	192	Jim Cave (273)	USA	Alabama	Jackson	0.59	941.47	432	131.67	Georgia Underground V32N4P38	1996-09
-	193	Twenty Three Dollar Pit (996)	USA	Alabama	Jackson	0.38	611.55	432	131.67	Georgia Underground V29N3P18-19	1992-09
-	194	Mill Hole (745)	USA	Alabama	Jackson	1.11	1792.81	431	131.37	Georgia Underground V29N3P18-19	1992-09
-	195	Battered Bar Cave	USA	Virginia	Bath	1.61	2591.04	430.9	131.34	Nathan Farrar e-mail	2017-07
-	196	Bucks Pocket Cave (432)	USA	Alabama	Jackson	1.14	1828.21	430	131.06	ACS	2016-06
UW	197	Cathedral-Falmouth System	USA	Florida	Suwannee	11.74	18893.7	429.1	130.8	Andrew Pitkin e-mail	2022-01
-	198	Solution Rift	USA	Tennessee	Marion	1.01	1630.27	429	130.76	TDCL	1992-09
-	199	Crystal Palace Cave	USA	Alaska	P.O.W. Island	0.00	0	429	130.76	NSS News
	200	Kimble Pit Cave	USA	West Virginia	Pendelton	10.03	16141.7	428	130.5	GVKS(Germany Valley Karst Survey), WVASS	2024-12
-	201	El Capitan Cave	USA	Alaska	P.O.W. Island	2.37	3809.32	428	130.45	NSS Caves Files - Dick Blenz	2016-10
-	202	Pig Hole	USA	Virginia	Giles	1.18	1899.03	428	130.45	VSS	1989-02
-	203	Kimble Pit	USA	West Virginia	Pendleton	9.22	14838.15	427	130.14	Corey Hackley e-mail	2021-11
-	204	Scott Cave	USA	West Virginia	Monroe	1.00	1609.34	426	129.84	Mike Dore	1985-10
-	205	Better Forgotten Cave	USA	Virginia	Highland	0.95	1524.05	426	129.84	BCCS	1995-07
-	206	Cyclops Cave	USA	Virginia	Russell	7.08	11394.16	424	129.24	J.Christie e-mail	2016-06
-	207	Dark Well (1945)	USA	Alabama	Jackson	0.44	706.5	421	128.32	Georgia Underground V29N3P18-19	1992-09
-	208	Reaper's Rockpile (gravity-slide cave)	USA	Montana	Teton	0.14	228.53	419	127.71	Jason e-mail	2016-10
-	209	Paradox Cave	USA	Tennessee	VanBuren	1.71	2743.93	418	127.41	Georgia Underground V32N4P38	1996-09
-	210	Warner Noisy Blower	USA	West Virginia	Pendleton	0.78	1256.93	417.5	127.25	Dwight Livingston e-mail	2019-12
-	211	Vast Caverns (1860)	USA	Alabama	Jackson	0.31	490.85	417	127.1	Georgia Underground V29N3P18-19	1992-09
-	212	Crystal 67 Cave	USA	California	Tulare	0.39	622.82	415	126.49	California Caver V33N1	1982-03
-	213	The Big Reveal	USA	Tennessee	Marion	0.29	459.33	415	126.49	Moni email	2026-04
-	214	Sherwood Spring Cave	USA	Tennessee	Franklin	0.72	1163.12	414	126.19	Deep Caves of TAG, John Stembel	2016-10
-	215	Grim Rock Cave	USA	Virginia	Giles	0.42	679	413	125.88	VSS	2017-06
-	216	Main Well	USA	Tennessee	Marion	1.33	2133.6	412	125.6	TCS-Moni	2025-08
-	217	The Cave That Summer Forgot	USA	Montana	Flathead	0.33	537.52	412	125.58	Jason Ballensky e-mail	2016-08
-	218	Trice Hollow Pit (2012)	USA	Alabama	Jackson	0.76	1226.32	411	125.27	Georgia Underground V29N3P18-19	1992-09
L	219	Little Red River	USA	Washington	Skamania County	0.75	1200.0	411	125.26	Garry Petrie e-mail	2023-01
-	220	LilyGuard Cave	USA	Montana	Judith Basin	0.41	659.83	410	124.97	Rick Brinkman e-mail	2016-05
-	221	Will's Welch Well (1748)	USA	Alabama	Jackson	0.25	407.16	410	124.97	Deep Caves of TAG, John Stembel	2016-10
-	222	Twist of Fate Pit	USA	Alabama	Jackson	0.09	143.23	408	124.36	NSS News V72N1	2016-01
-	223	Mammoth Cave System (N.P.)	USA	Kentucky	Ed./Hart/Bar.	426.00	685581	407.2	124.1	Facebook	2022-12
UW	224	Weeki Wachee Spring	USA	Florida	Hernando	6.79	10930	407	124.05	Andrew Pitkin e-mail	2019-10
-	225	Breathing Cave	USA	Virginia	Bath	6.74	10847	406.8	124	Gangsta Mappers	2018-01
-	226	Russell Cave (N.M.) (169)	USA	Alabama	Jackson	11.61	18675.71	405.8	123.7	Jason Richards	2017-11
L	227	Wooden Ladder Cave	USA	Hawaii	Hawaii	0.76	1219.9	405.8	123.7	Doug Medville	2016-01
-	228	Water Well (1747)	USA	Alabama	Jackson	0.55	891.58	402	122.53	Georgia Underground V29N3P18-19	1992-09
-	229	Wet Cave	USA	Tennessee	Franklin	1.41	2275.61	401	122.22	Gerald Moni email	2025-07
-	230	Fort-Peebles Cave	USA	Tennessee	Franklin	1.23	1985.93	401	122.22	Gerald Moni email	2025-07
-	231	Oregon Caves	USA	Oregon	Josephine	3.03	4876.31	400	121.92	Steve Knutson	1985-01
-	232	Icy Fate Cave	USA	Alaska	Heceta Island	0.62	1002.62	400	121.92	Marcel LaPerriere e-mail	1998-08
-	233	Mega Well (2310)	USA	Alabama	Jackson	0.51	814.33	400	121.92	ACS	2016-06
L	234	Upper Owl Cave	USA	Hawaii	Hawaii	1.95	3135	399	121.6	Doug Medville e-mail	2017-04
-	235	Sub-Solomon Cave	USA	Tennessee	Franklin	0.85	1364.3	397	121	TCS-Moni	2025-08
L	236	Coffee Cave	USA	Hawaii	Hawaii	0.71	1134.6	397	121	Doug Medville e-mail	2015-02
L	237	Caterpillar Cave	USA	Hawaii	Hawaii	1.06	1703	393.7	120	Doug Medville	2018-03
-	238	Black Abyss (Palute Cave)	USA	Arizona	Coconino	0.13	215	393.7	120	Nicolas Barth e-mail	2020-12
-	239	Middle Earth Cave	USA	West Virginia	Greenbrier	1.24	1997.96	389.7	118.78	WVASS Bulletin #24	2020-06
-	240	Wizard's Well Cavern	USA	Texas	Terrell	1.25	2006.85	388	118.26	Texas Speleological Survey via Jerry Atkinson e-mail	2016-01
-	241	Sinnett - Thorn Mtn. Cave System	USA	West Virginia	Pendleton	2.33	3748.16	386	117.65	Paul Stevens	1979-07
-	242	Walt Allen (Baxters) Cave	USA	West Virginia	Pocahontas	0.88	1417.83	385	117.35	WVASS	1981-02
-	243	Stagebarn Crystal Cave	USA	South Dakota	Meade	12.15	19553.5	383.6	116.92	Derek Wolfe e-mail	2023-11
-	244	Marvel Cave	USA	Missouri	Stone	1.27	2043.87	383	116.74	M.S.S. Hoffman	2015-02
-	245	Cave Mtn. Cave	USA	West Virginia	Pendleton	2.20	3540.56	382	116.43	Bob Gulden	2016-06
L	246	Two Owl Cave	USA	Hawaii	Hawaii	3.13	5040	381.9	116.4	Peter Bosted via Doug Medville e-mail	2017-04
-	247	Run to the Mill Cave	USA	Tennessee	Cumberland	2.93	4708.94	381	116.13	Buddy Lane	1986-07
-	248	Skydusky Hollow Cave System (Newberry - Bane - Buddy Penley Cave)	USA	Virginia	Bland	9.00	14484.1	380	115.82	Ed Devine	2021-11
-	249	Leandras Cave	USA	Arizona	Coconino	9.55	15364.41	378	115.21	map at park Headquarters via Greg e-mail	2016-06
UW	250	Goodenough Spring	USA	Texas	Val Verde	0.11	178.64	377	114.91	Texas Speleological Survey via Jerry Atkinson e-mail	2016-01
	251	No Business Blowing Cave	USA	Tennessee	Franklin	0.75	1209.1	377	114.9	TCS-Moni	2025-08
	252	Milk Horror Hole	USA	Tennessee	Putnam	0.38	603.8	375	114.3	TCS-Moni	2025-08
-	253	Nunley Mountain Cave (Maria Angela Grotto)	USA	Tennessee	Grundy	21.18	34085.9	370	112.8	Julianne Ramsey email	2026-03
-	254	Cottonwood Cave	USA	New Mexico	Eddy	2.22	3577.57	370	112.78	Dave Belski e-mail	2016-03
-	255	Poia Lake Cave	USA	Montana	Glacier	1.04	1670.5	370	112.78	Alpine Karst V2P67-85	2016-06
-	256	Banes Spring Cave	USA	Virginia	Bland	3.86	6212.1	368.8	112.4	Ed Devine	2021-11
-	257	Camps Gulf Cave	USA	Tennessee	Van Buren	8.12	13060.7	368	112.17	Gerald Moni email	2025-07
-	258	Grassy Cove Saltpeter Cave	USA	Tennessee	Cumberland	7.89	12702.55	367	111.86	Deep Caves of TAG, John Stembel	2016-10
-	259	Fisher Ridge Cave System	USA	Kentucky	Hart	134.20	215908.8	366.44	111.7	Chip Hopper e-mail	2024-05
-	260	Robinson Ridge Saltpeter Cave	USA	Tennessee	Cannon /Coffee	3.70	5948.14	365	111.25	Tenn.Cave Survey	2015-02
L	261	Keokeo 8D-16J	USA	Hawaii	Hawaii	1.25	2017	362.5	110.5	Peter Bosted HSS 2016 no. 39 (note #2); Update T. Gracanin	2021-01
-	262	Whitaker Sink	USA	Montana	Judith Basin	0.24	384	360.9	110	2018 NSS Convention Guide Book	2010-07
L	263	Kaumana Cave	USA	Hawaii	Hawaii	2.03	3260	360.6	109.9	Peter Bosted 1 Jun 2019 email to T Gracanin	2019-06
-	264	Geiger Cave / Houston Hollow (459)	USA	Alabama	Jackson	2.06	3320.08	360	109.73	Deep Caves of TAG, John Stembel	2016-10
-	265	New River Cave	USA	Virginia	Giles	6.49	10441.96	359	109.42	Dave West email	2024-07
-	266	Starnes Cave	USA	Virginia	Giles	4.40	7081.11	359	109.42	VSS Long & Deep Cave Lists	2015-02
L	267	Motheleum Cave	USA	Hawaii	Hawaii	0.78	1251	357.6	109	Doug Medville	2018-03
	268	Heart of Gould Cave	USA	Tennessee	White County	6.21	9994.03	356	108.5	Zeke McKee, Facebook	2024-01
-	269	Qalgal Cave	USA	Montana	Flathead	0.49	794	353	107.6	2018 NSWSW Convention Guide Book	2010-07
-	270	Flower Pot	USA	West Virginia	Randolph	3.69	5936.87	352	107.29	WVASS Database	2016-05
UW	271	Wakulla Cave System	USA	Florida	Leon/Wakulla	44.83	72171	350	106.68	Casey McKinlay e-mail	2023-04
-	272	Byer's Cave System	USA	Georgia	Dade	5.50	8851.39	350	106.68	Grorgia Underground V24N1	1987-03
-	273	Millers Cove Cave	USA	Virginia	Roanoke	2.50	4023.36	350	106.68	Phil Lucas e-mail	2016-07
UW	274	Sally Ward Cave	USA	Florida	Wakulla	1.36	2195.15	350	106.68	Caves and Karst of Florida, 2008 NSS Convention	2016-07