List of longest caves by country

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by editing the page to add missing items, with references to reliable sources.

This list of longest caves by country includes the longest-known natural cave per country. To be listed, the caves must have been surveyed to cave surveying standards, and the results published in reliable sources.

List

Continent	Country	System	Length	coordinates	Discovery	Associated parks, protected areas
Africa	Algeria	Ghar Boumâaza  [ fr ] (Tafna  [ fr ] river) (غار بومعزة)	18.400 km (11.4 mi) [1]	34°42′00″N1°18′41″W / 34.70000°N 1.31139°W / 34.70000; -1.31139 (Ghar Boumâaza)	–	Parc National de Tlemcen
Africa	Angola	Gruta do Tchivinguiro	1.230 km (0.8 mi) [2]	15°09′50″S13°17′50″E / 15.16389°S 13.29722°E / -15.16389; 13.29722 (Tchivinguiro)	–	none
Africa	Burundi	Grotte de Mugobo	0.090 km (0.1 mi) [3]	03°26′15″S30°36′15″E / 3.43750°S 30.60417°E / -3.43750; 30.60417 (Grotte de Mugobo)	–	none
Africa	Cameroon	Gaskin Cave	0.450 km (0.3 mi) [4]	4°11′45″N9°11′57″E / 4.1958°N 9.1992°E / 4.1958; 9.1992 (Gaskin Cave)	–	Mt Cameroon National Park
Africa	Chad	Bourdout Oumou	0.115 km (0.1 mi) [5]	17°11′N21°35′E / 17.183°N 21.583°E / 17.183; 21.583 (Bourdout Oumou)	–	-
Africa	Comoros	Panga Nyamaoui	0.810 km (0.5 mi) [6]	11°24′33.06″S43°17′04.51″E / 11.4091833°S 43.2845861°E / -11.4091833; 43.2845861 (Panga Nyamaoui) {approx.}	–	none
Africa	Congo	N'kila N'tari  [ fr ]	1.5 km (0.9 mi) [7]	4°07′13″S13°51′10″E / 4.120278°S 13.852778°E / -4.120278; 13.852778 (Nkila Ntari)	–	-
Africa	Democratic Republic of the Congo	Ngovo Cave	9.522 km (5.9 mi) [8]	5°18′07″S14°56′14″E / 5.3019°S 14.9373°E / -5.3019; 14.9373 (Ngovo cave)	–	none
Africa	Eswatini (former Swaziland)	Gobholo Cave	1.099 km (0.7 mi) [9]	26°21′26″S31°10′10″E / 26.35721°S 31.16932°E / -26.35721; 31.16932 (Gobholo cave)	2012	none
Africa	Egypt	Sannur Cave	0.275 km (0.2 mi) [10] [11]	28°37′23″N31°17′11″E / 28.62306°N 31.28639°E / 28.62306; 31.28639 (Sannur Cave)	–	none
Africa	Equatorial Guinea	Cueva Caracas  [ es ]	0.036 km (0.0 mi) [1]	02°09′00″N11°19′00″E / 2.15000°N 11.31667°E / 2.15000; 11.31667 (Cueva Caracas)	1967	none
Africa	Ethiopia	Sof Omar Cave (ሶፍ-ዑመር)	15.1 km (9.4 mi) [1]	6°54′22.7″N40°50′41.6″E / 6.906306°N 40.844889°E / 6.906306; 40.844889 (Sof Omar Cave)	1972	none
Africa	Gabon	Mbenaltembe Cave	2.4 km (1.5 mi) [12]	2°20′32″S11°35′20″E / 2.34222°S 11.58889°E / -2.34222; 11.58889 (Mbenaltembe cave)	2008	none
Africa	Kenya	Leviathan Cave	9.152 km (5.7 mi) [1] [13] [14]	02°40′48.89″S37°52′48.86″E / 2.6802472°S 37.8802389°E / -2.6802472; 37.8802389 (Leviathan Cave)	1975	Chyulu Hills
Africa	Libya	Umm al Masabih(أم المصابيح)	3.593 km (2.2 mi) [15]	32°04′06″N12°41′40″E / 32.06833°N 12.69444°E / 32.06833; 12.69444 (Umm al Masabih)	–	none
Africa	Madagascar	Marosakabe cave system	124.255 km (77.2 mi) [16]	16°27′07″S45°20′08″E / 16.45189°S 45.33543°E / -16.45189; 45.33543 (Marosakabe cave)	2006	Tsingy de Namoroka Nature Reserve
Africa	Morocco	Win Timdouine  [ fr ]	19.128 km (11.9 mi) [1]	30°40′49″N9°20′41″W / 30.68028°N 9.34472°W / 30.68028; -9.34472 (Win Timdouin)	–	none
Africa	Mozambique	Khodzu (Codzo) Cave	0.942 km (0.6 mi) [17]	18°33′53″S34°52′00″E / 18.56472°S 34.86666°E / -18.56472; 34.86666 (Khodzu Cave)	–	none
Africa	Namibia	Arnhem Cave	4.5 km (2.8 mi) [18]	22°42′05″S18°05′47″E / 22.70138°S 18.09638°E / -22.70138; 18.09638 (Arnhem cave)	–	none
Africa	Nigeria	Ogbunike Cave	0.350 km (0.2 mi) [19] [20]	06°11′11″N06°54′21″E / 6.18639°N 6.90583°E / 6.18639; 6.90583 (Ogbunike Cave)	-	none
Africa	Rwanda	Ubuvumo Bwibihonga	4.530 km (2.8 mi) [21]	01°38′53.2″S29°22′42.5″E / 1.648111°S 29.378472°E / -1.648111; 29.378472 (Ubuvumo Bwibihonga)	-	none
Africa	South Africa	Apocalypse Pothole	12.302 km (7.6 mi)	26°16′11.04″S27°17′37.38″E / 26.2697333°S 27.2937167°E / -26.2697333; 27.2937167 (Apocalypse Pothole) (approx.)	–	none
Africa	Tanzania	Nan'goma Cave	7.510 km (4.7 mi) [22]	8°30′41.2″S38°53′0.7″E / 8.511444°S 38.883528°E / -8.511444; 38.883528 (Nan'goma Cave)	–	none
Africa	Tunisia	Cave Mine	4.100 km (2.5 mi) [23]	35°56′48.21″N09°34′45.02″E / 35.9467250°N 9.5791722°E / 35.9467250; 9.5791722 (Cave Mine)	–	none
Africa	Uganda	Garama Cave	0.342 km (0.2 mi) [24]	1°21′24″S29°37′52″E / 1.35670°S 29.63112°E / -1.35670; 29.63112 (Garama cave)	–	Mgahinga National Park
Africa	Zimbabwe	Batze Cave	1.037 km (0.6 mi) [25] [26]	17°10′02″S29°11′01″E / 17.1672°S 29.1836°E / -17.1672; 29.1836 (Batze cave)	–	none
Asia	Afghanistan	Ab Bar Amada Cave	1.220 km (0.8 mi) [27]	35°14′45″N69°10′48″E / 35.245800°N 69.180000°E / 35.245800; 69.180000 (Ab Bar Amada cave)		none
Asia	Armenia	Arjeri qarandzav (Bears cave)	3.500 km (2.2 mi) [28]	39°42′36″N45°14′38″E / 39.7099028°N 45.243970°E / 39.7099028; 45.243970 (Arjeri qarandzav)	-	none
Asia	Cambodia	Roung Dei Ho–Thom Ken	2.036 km (1.3 mi) [29]	10°37′01″N104°14′34″E / 10.61684°N 104.2429°E / 10.61684; 104.2429 (Roung Dei Ho–Thom Ken)	–	none
Asia	China	Shuanghedong Cave Network (双河洞)	437.434 km (271.8 mi) [30]	28°14′31″N107°16′34″E / 28.24199°N 107.27608°E / 28.24199; 107.27608 (Shuanghe Dongqun)	1988	Suiyang Shuanghedong National Geopark
Asia	India	Krem Liat Prah	31.070 km (19.3 mi) [31]	25°22′27″N92°32′17″E / 25.37404°N 92.53816°E / 25.37404; 92.53816 (Krem Liat Prah)		none
Asia	Indonesia	Luweng Jaran system	18.200 km (11.3 mi) [32]	8°13′03″S111°00′23″E / 8.21758°S 111.00625°E / -8.21758; 111.00625 (Luweng Jaran)		none
Asia	Irak	Kuna Kamtiar	5.060 km (3.1 mi) [33] [34]	35°21′30.5″N45°01′26.7″E / 35.358472°N 45.024083°E / 35.358472; 45.024083 (Kuna Kamtiar)		none
Asia	Iran	Katale Khor	12.860 km (8.0 mi) [35]	35°50′08″N48°09′42″E / 35.83556°N 48.16167°E / 35.83556; 48.16167 (Katale Khor)		none
Asia	Israel	Malcham Cave	10 km (6.2 mi) [36] [37]	31°07′19″N35°23′00″E / 31.12194°N 35.38333°E / 31.12194; 35.38333 (Malcham Cave)		none
Asia	Japan	Akkadō (安家洞)	23.7 km (14.7 mi) [38] [39]	39°59′1.1″N141°44′10.05″E / 39.983639°N 141.7361250°E / 39.983639; 141.7361250 (Akkadō)		none
Asia	Jordan	Al-Fahda Cave	0.924 km (0.6 mi) [40]	18°25′34″N7°37′19″E / 18.426°N 7.622°E / 18.426; 7.622 (Al-Fahda cave)		none
Asia	Kazakhstan	Uluchar Cave	1.500 km (0.9 mi) [41] [42]	42°03′15.69″N70°05′49.01″E / 42.0543583°N 70.0969472°E / 42.0543583; 70.0969472 (Uluchar cave) (approx.)		none
Asia	Laos	Nam Dôn cave system	42.0 km (26.1 mi) [43]	17°33′45.30″N104°52′47.36″E / 17.5625833°N 104.8798222°E / 17.5625833; 104.8798222 (Nam Dôn)		none
Asia	Lebanon	Jeita Grotto	10.050 km (6.2 mi) [44]	33°56′38″N35°38′39″E / 33.9439055°N 35.6441077°E / 33.9439055; 35.6441077 (Feita cave)		none
Asia	Malaysia	Clearwater Cave System (malay:Gua Air Jernih)	255.9 km (159.0 mi) [45] [46]	4°03′55″N114°49′54″E / 4.06529°N 114.83176°E / 4.06529; 114.83176 (Clearwater Cave)	1978	Gunung Mulu National Park
Asia	Mongolia	Taliin Cave	0.240 km (0.1 mi) [47]	45°35′25.00″N114°30′02.06″E / 45.5902778°N 114.5005722°E / 45.5902778; 114.5005722 (Taliin Cave)		none
Asia	Myanmar	Som Hein Cave	11.000 km (6.8 mi) [48]	21°01′41.73″N100°07′10.59″E / 21.0282583°N 100.1196083°E / 21.0282583; 100.1196083 (Som Hein cave)	–	none
Asia	Nepal	Gupteshwor Mahadev Cave (Patale Chango) (गुप्तेश्वर महादेव गुफा)	2.057 km (1.3 mi) [49]	28°11′22″N83°57′28″E / 28.189552°N 83.957847°E / 28.189552; 83.957847 (Gupteshwor Mahadev Cave)		none
Asia	Oman	Al Hoota Cave	4.5 km (2.8 mi) [50]	23°04′55″N57°21′17″E / 23.081944°N 57.354722°E / 23.081944; 57.354722 (Al Hoota Cave)		none
Asia	Pakistan	Pir Ghaib Gharr Gharra	1.275 km (0.8 mi) [51]	29°45′36.0″N67°17′24.0″E / 29.760000°N 67.290000°E / 29.760000; 67.290000 (Pir Ghaib Gharr Gharra) (approx.)		none
Asia	Philippines	St.Pauls Underground River Cave	24.0 km (14.9 mi) [52]	10°11′57.45″N118°55′34.46″E / 10.1992917°N 118.9262389°E / 10.1992917; 118.9262389 (St Paul)		Puerto Princesa Subterranean River National Park
Asia	Saudi Arabia	Umm Jirsan System	1.481 km (0.9 mi) [53]	25°35′19″N39°45′25″E / 25.58861°N 39.75694°E / 25.58861; 39.75694 (Umm Jirsan)	2007	-
Asia	South Korea	Billemotdonggul  [ kr ]	11.749 km (7.3 mi) [54] [55]	33°23′15″N126°24′33″E / 33.3874°N 126.4092°E / 33.3874; 126.4092 (Billemot lava tube)		none
Asia	Tajikistan	Rangkulskaya Cave	2.050 km (1.3 mi) [56]	38°26′02″N74°18′23″E / 38.433930°N 74.306490°E / 38.433930; 74.306490 (Rangkulskaya cave)		none
Asia	Thailand	Tham Phra Wang Daeng	13.7 km (8.5 mi) [57]	16°40′43″N100°41′15″E / 16.6785254°N 100.687444°E / 16.6785254; 100.687444 (Tham Phra Wang Daeng)		none
Asia	Turkey	Pınargözü Cave	16 km (9.9 mi) [1] [58] or 10.5 km (6.5 mi) [59]	37°41′48″N31°18′27″E / 37.69667°N 31.30750°E / 37.69667; 31.30750 (Pınargözü)		none
Asia	Turkmenistan	Kap-Kutan  [ sv ] (Кап-Кутан)	57 km (35.4 mi) [1]	37°44′00″N66°26′00″E / 37.73333°N 66.43333°E / 37.73333; 66.43333 (Kap-Kutan)		none
Asia	Uzbekistan	Dark Star (cave)	17.400 km (10.8 mi) [60]	38°23′47″N67°17′13″E / 38.396389°N 67.286944°E / 38.396389; 67.286944 (Dark Star)		1984
Asia	Vietnam	Hang Khe Ry cave system	18.900 km (11.7 mi) [1] [61]	17°34′52″N106°16′59″E / 17.5812°N 106.2830°E / 17.5812; 106.2830 (Hang Khe Ry)		none
Asia	Yemen (Socotra)	Giniba Cave	13.526 km (8.4 mi) [62] [63] [64]	12°26′06.5″N53°56′21.40″E / 12.435139°N 53.9392778°E / 12.435139; 53.9392778 (Giniba cave)		none
Caribbean	Bahamas	Lucayan Caverns (Ben's Cave)	10.363 km (6.4 mi) [65]	26°36′20″N78°24′07″W / 26.60544°N 78.40183°W / 26.60544; -78.40183 (Ben's Cave)		Lucayan National Park
Caribbean	Belize	Chiquibul Cave System	15 km (9.3 mi) [note 1] [66] (approx.)	16°39′53″N89°05′22″W / 16.6645860°N 89.0895238°W / 16.6645860; -89.0895238 (Tun Kul Cave)		Chiquibul National Park
Caribbean	Cuba	Gran Caverna de Palmarito	54 km (33.6 mi) [1]	22°38′36″N83°44′01″W / 22.6434673°N 83.7335970°W / 22.6434673; -83.7335970 (Gran Caverna de Palmarito)		none
Caribbean	Haiti	Marie-Jeanne cave  [ fr ]	5.3 km (3.3 mi) [67]	18°15′16″N74°05′39″W / 18.254543°N 74.094270°W / 18.254543; -74.094270 (Grotte Marie-Jeanne)		none
Caribbean	Jamaica	Gourie Cave	3.505 km (2.2 mi) [68]	18°11′40.2″N77°30′38.4″W / 18.194500°N 77.510667°W / 18.194500; -77.510667 (Gourie cave)		none
Caribbean	Puerto-Rico	Sistema del Rio Encantado	21.770 km (13.5 mi) [1] [69]	18°20′37″N66°31′46″W / 18.34361°N 66.52944°W / 18.34361; -66.52944 (Sistema del Rio Encantado)		none
Caribbean	Dominican Republic	Boca del Infierno (cueva Fun-Fun)	9.3 km (5.8 mi) [70]	18°47′20″N69°25′11″W / 18.788807°N 69.4195916°W / 18.788807; -69.4195916 (Boca del Infierno)		none
Europe	Albania	Lengarices system	12.9 km (8.0 mi) [71] [72]	40°14′40″N20°25′56″E / 40.24431°N 20.43213°E / 40.24431; 20.43213 (Lengarices) (approx)	2023	none
Europe	Austria	Schönberg-Höhlensystem	156.942 km (97.5 mi) [73] [74]	47°42′06″N13°46′20″E / 47.701528°N 13.772333°E / 47.701528; 13.772333 (Schönberg-Höhlensystem)	1976	none
Europe	Belgium	Caves of Han-sur-Lesse	10.693 km (6.6 mi) [75]	50°07′14″N5°11′32″E / 50.1206388°N 5.1921683°E / 50.1206388; 5.1921683 (Grotte de Han)	-	none
Europe	Bosnia and Herzegovina	Govještica  [ bs ]	9.870 km (6.1 mi) [76] : 32	43°46′30.83″N18°53′23.44″E / 43.7752306°N 18.8898444°E / 43.7752306; 18.8898444 (Govještica)	-	none
Europe	Bulgaria	Duhlata (Духлата)	18.200 km (11.3 mi) [77]	42°29′48″N23°11′46″E / 42.4966087°N 23.1961941°E / 42.4966087; 23.1961941 (Duhlata)	–	none
Europe	Croatia	Jamski sustav Kita Gaćešina-Draženova puhaljka  [ de ]	63.746 km (39.6 mi) [78]	44°15′N15°51′E / 44.250°N 15.850°E / 44.250; 15.850 (Jamski sustav Kita Gaćešina-Draženova puhaljka)	-	none
Europe	Czech Republic	Amatérská Cave	39.146 km (24.3 mi) [1]	49°22′43″N16°43′42″E / 49.3785997°N 16.7284358°E / 49.3785997; 16.7284358 (Amatérská jeskyně)	-	none
Europe	Denmark (Greenland)	Cove Cave	0.103 km (0.1 mi) [79]	80°14′48.24″N21°57′22.23″W / 80.2467333°N 21.9561750°W / 80.2467333; -21.9561750 (Cove cave)	-	none
Europe	Finland	Lohikäärmeen Luola Caves	0.300 km (0.2 mi) [80]	60°09′43″N24°09′43″E / 60.16202°N 24.16202°E / 60.16202; 24.16202 (Lohikäärmeen Luola caves)	-	none
Europe	France	Réseau Félix Trombe	117.2 km (72.8 mi) [81]	42°58′21″N0°51′59″E / 42.97250°N 0.86639°E / 42.97250; 0.86639 (Réseau Félix Trombe)	1908	none
Europe	Georgia	Tovliani Upskruli  [ ka ] (თოვლიანი უფსკრული)	24,080 km (14,962.6 mi) [82]	43°15′53″N40°43′06″E / 43.26472°N 40.71833°E / 43.26472; 40.71833 (Snezhnaya cave system)	-	none
Europe	Germany	Riesending Cave	23.8 km (14.8 mi) [83] [84]	47°41′49″N12°59′5″E / 47.69694°N 12.98472°E / 47.69694; 12.98472 (Riesending cave)	-	none
Europe	Greece	Diros cave  [ el ]	15.400 km (9.6 mi) [85]	36°38′18″N22°22′50″E / 36.63836°N 22.38066°E / 36.63836; 22.38066 (Diros cave)	-	none
Europe	Hungary	Pálvölgyi-Mátyáshegyi System  [ hu ]	31.0 km (19.3 mi) [86]	47°31′58″N19°00′54″E / 47.5329°N 19.015°E / 47.5329; 19.015 (Pálvölgyi-Mátyáshegyi)	-	none
Europe	Iceland	Laufbalavatn	5.013 km (3.1 mi) [87]	63°54′41″N19°22′42″W / 63.91130°N 19.37835°W / 63.91130; -19.37835 (Laufbalavatn)	-	none
Europe	Ireland	Pollnagollum	16 km (9.9 mi) [88]	53°04′38″N9°15′05″W / 53.07716°N 9.25136°W / 53.07716; -9.25136 (Pollnagollum)	-	none
Europe	Italy	Complesso del Monte Canin	83.800 km (52.1 mi) [1] [89] [90]	46°22′39″N13°25′46″E / 46.37739°N 13.42947°E / 46.37739; 13.42947 (Complesso del Monte Canin - Abisso Emilio Comici)	-	none
Europe	Kosovo	The Cave of the Great Gorge  [ sq ]	08.036 km (5.0 mi) [91] [92]	42°39′54.03″N20°13′51.67″E / 42.6650083°N 20.2310194°E / 42.6650083; 20.2310194 (The Cave of the Great Gorge) (approx)	–	none
Europe	Latvia	Riežupe sand caves  [ lv ]	0.351 km (0.2 mi) [93]	57°00′24.93″N21°59′13.53″E / 57.0069250°N 21.9870917°E / 57.0069250; 21.9870917 (Riežupe sand caves)	-	none
Europe	Lithuania	Cows Ola Cave  [ lt ]	0.046 km (0.0 mi) [94]	56°12′24″N24°41′40″E / 56.206742°N 24.694461°E / 56.206742; 24.694461 (Karvės Ola cave)	-	none
Europe	North Macedonia	Slatinski Izvor cave (Слатински Извор)  [ mk ]	3.932 km (2.4 mi) [95]	41°34′47.86″N21°12′47.67″E / 41.5799611°N 21.2132417°E / 41.5799611; 21.2132417 (Slatinski Izvor cave)	–	none
Europe	Moldova	Emil Racoviță Cave  [ ro ]	92.080 km (57.2 mi)	48°16′48″N26°38′01″E / 48.2801152°N 26.6335117°E / 48.2801152; 26.6335117 (Emil Racoviță Cave)	–	none
Europe	Montenegro	Pećina nad vražjim firovima  [ sr ](Ђаловића пећина)	17.500 km (10.9 mi) [96]	43°04′21″N19°55′14″E / 43.0726346°N 19.9205968°E / 43.0726346; 19.9205968 (Pećina nad vražjim firovima)	-	none
Europe	Norway	Tjoarvekrajgge	25.167 km (15.6 mi) [97]	67°36′35″N15°41′31″E / 67.60972°N 15.69194°E / 67.60972; 15.69194 (Tjoarvekrajgge)	–	none
Europe	Poland	Jaskinia Wielka Śnieżna	23.723 km (14.7 mi) [98]	49°14′24″N19°55′23″E / 49.24000°N 19.92306°E / 49.24000; 19.92306 (Jaskinia Wielka Śnieżna)	–	none
Europe	Portugal	Gruta do Almonda  [ pt ]	14 km (8.7 mi) [1]	39°30′17″N8°36′58″W / 39.50472°N 8.61611°W / 39.50472; -8.61611 (Gruta do Almonda)	–	none
Europe	Romania	Peștera Vântului	47 km (29.2 mi) [99]	46°56′21″N22°32′37″E / 46.9392°N 22.5436°E / 46.9392; 22.5436 (Pestera Vantului)	-	none
Europe	Russia	Botovskaya  [ ru ] (Ботовская пещера)	70.414 km (43.8 mi) [100]	55°18′31″N105°20′36″E / 55.3086°N 105.3434°E / 55.3086; 105.3434 (Botovskaya)	-	none
Europe	Serbia	Lazareva Pećina	9.818 km (6.1 mi) [101]	44°01′45″N21°57′46″E / 44.0293°N 21.9627°E / 44.0293; 21.9627 (Lazareva Pećina)	–	none
Europe	Slovakia	Demanovsky jaskynny system  [ cs ]	35.116 km (21.8 mi) [102]	49°0′18″N19°35′13″E / 49.00500°N 19.58694°E / 49.00500; 19.58694 (Demanovsky jaskynny system)	–	none
Europe	Slovenia	Migovec System	43.009 km (26.7 mi) [103]	46°15′07″N13°45′50″E / 46.25194°N 13.76389°E / 46.25194; 13.76389 (Migovec System)	–	Triglav National Park
Europe	Spain	Sistema del Alto Tejuelo	208.984 km (129.9 mi) [104]	43°15′11″N3°40′51″W / 43.25306°N 3.68079°W / 43.25306; -3.68079 (Sistema del Alto Tejuelo)	1965	none
Europe	Sweden	Coral Cave	5.0 km (3.1 mi) [105]	64°53′19″N14°06′39″E / 64.888684°N 14.110749°E / 64.888684; 14.110749 (Coral cave)		none
Europe	Switzerland	Hölloch	211.229 km (131.3 mi) [106] [107]	46°58′36″N8°47′18″E / 46.976670°N 8.788330°E / 46.976670; 8.788330 (Hölloch)	1875	none
Europe	Ukraine	Optymistychna (Оптимістична)	264.576 km (164.4 mi) [1]	48°44′06″N25°58′26″E / 48.73494°N 25.97379°E / 48.73494; 25.97379 (Optymistychna)	-	none
Europe	United Kingdom	Three Counties System	86.619 km (53.8 mi) [108]	54°12′25″N2°30′23″W / 54.20699°N 2.506452°W / 54.20699; -2.506452 (Three Counties System)	1966	none
North America	Canada	Castleguard Cave	21.311 km (13.2 mi) [109] [110]	52°04′38″N117°12′48″W / 52.07718°N 117.21322°W / 52.07718; -117.21322 (Castlegard)	–	none
North America	Costa Rica	Sistema kárstico del Cerro Corredor	3.872 km (2.4 mi) [111] [112]	8°40′N82°55′W / 8.66°N 82.91°W / 8.66; -82.91 (Sistema kárstico del Cerro Corredor)	–	none
North America	Honduras	Cueva de la Quebrada Susmay	6.690 km (4.2 mi) [113]	14°58′56.24″N86°02′55.44″W / 14.9822889°N 86.0487333°W / 14.9822889; -86.0487333 (Susmay caves)	–	none
North America	Mexico	Sistema Ox Bel Ha	496.8 km (308.7 mi) [114] [115]	20°09′37″N87°29′15″W / 20.16028°N 87.48750°W / 20.16028; -87.48750 (Sistema Ox Bel Ha)	1996	none
North America	Panama	Ol' Bank Underworld Cave	1.146 km (0.7 mi) [116]	9°18′04″N82°08′14″W / 9.301034°N 82.137244°W / 9.301034; -82.137244 (Ol' Bank Underworld Cave)	–	Isla Bastimentos National Marine Park
North America	United States	Mammoth Cave	685.6 km (426.0 mi) [1] [117] [118]	37°11′15″N86°06′13″W / 37.18758°N 86.10357°W / 37.18758; -86.10357 (Mammoth cave historic entrance)	1791	Mammoth Cave National Park
Oceania	Australia	Bullita Cave	123.0 km (76.4 mi) [1]	16°03′48″S130°23′00″E / 16.06333°S 130.38333°E / -16.06333; 130.38333 (Bullita cave)	1990	Gregory National Park
Oceania	New Zealand	Bulmer Caverns	74.319 km (46.2 mi) [119]	41°33′30″S172°31′08″E / 41.5583°S 172.5188°E / -41.5583; 172.5188 ("Bulmer Caverns")	1984	none
Oceania	Papua New Guinea	Mamo Kananda	54.800 km (34.1 mi) [120]	5°36′36″S142°19′53″E / 5.6100°S 142.3314°E / -5.6100; 142.3314 (Mamo Kananda)	–	none
Oceania	Samoa	La'auoleola	5 km (3.1 mi) [121]	13°32′11″S172°31′45″W / 13.53652°S 172.52919°W / -13.53652; -172.52919 (La'auoleola)		none
Oceania	Vanuatu	Kafae Aven	3.702 km (2.3 mi) [122]	15°32′21.27″S167°00′51.07″E / 15.5392417°S 167.0141861°E / -15.5392417; 167.0141861 (Kafae Aven)	–	none
South America	Argentina	Caverna del Templo  [ es ]	3.432 km (2.1 mi) [123]	38°36′40″S70°23′21″W / 38.611111°S 70.389167°W / -38.611111; -70.389167 (Caverna del Templo)		none
South America	Bolivia	Caverna de Umajalanta  [ es ]	4.6 km (2.9 mi) [124]	18°06′52″S65°48′42″W / 18.1145°S 65.8116°W / -18.1145; -65.8116 (Umajalanta)		none
South America	Brazil	Toca da Boa Vista	114 km (70.8 mi) [125]	10°09′45″S40°51′35″W / 10.1625251°S 40.8597012°W / -10.1625251; -40.8597012 (Toca da Boa Vista)	1987	none
South America	Chile	Roiho system	6.350 km (3.9 mi) [126]	27°06′52″S109°24′12″W / 27.114452°S 109.40324°W / -27.114452; -109.40324 (Roiho system)		none
South America	Colombia	Cueva del Hipocampo	2.021 km (1.3 mi) [127]	6°03′36″N73°50′24″W / 6.059954°N 73.840134°W / 6.059954; -73.840134 (Cueva del Hipocampo)		none
South America	Ecuador	Systema Sylvana	4.1 km (2.5 mi) [128]	0°37′23″S90°22′06″W / 0.623017°S 90.368254°W / -0.623017; -90.368254 (Systema Sylvana)		Galápagos National Park
South America	Peru	Tragadero de Parjugsha Grande	4.070 km (2.5 mi) [129]	6°18′05″S77°44′15″W / 6.30143°S 77.73762°W / -6.30143; -77.73762 (Tragadero de Parjugsha)		none
South America	Uruguay	Grutas of Salamanque	0.300 km (0.2 mi) [130] [131]	34°04′42.03″S54°36′26.42″W / 34.0783417°S 54.6073389°W / -34.0783417; -54.6073389 (Grutas of Salamanque)		none
South America	Venezuela	Cueva del Saman  [ es ]	18.148 km (11.3 mi) [132]	10°47′53″N72°25′52″W / 10.798°N 72.431°W / 10.798; -72.431 (Cueva del Saman)	–	none

See also

• List of caves
• List of longest caves
• Speleology

References

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Notes

1. Several lengths of the network, between 40,50 or 65km are reported by different secondary sources. However, the reference cited there clearly states that the network is split between at least 4 unconnected caves, and the total length of the network cannot be the addition of 4 individual caves.