The longest
The longest caves.
132 caves ranked by surveyed length.
1
Mammoth Cave
United States644 km2
Optymistychna Cave
Ukraine265 km20 m3
Clearwater Cave
Malaysia109 km4
Zolushka/Emil Racoviță cave
Moldova91 km5
Baradla cave
Hungary26 km6
Santo Tomás Cave
Cuba25 km7
Jaskinia Wielka Śnieżna
Poland24 km8
Riesending cave
Germany20 km9
Jaskyna mrtvych netopierov
Slovakia19 km10
Duhlata
Bulgaria18 km53 m11
Cueva del Viento
Spain18 km12
Dan yr Ogof
United Kingdom17 km13
Lazar's Cave
Serbia16 km14
Diros cave
Greece15 km15
Marie-Jeanne cave
Haiti15 km16
Tham Phra Wang Daeng
Thailand14 km17
Orlova ChukaBulgaria13 km18
Quri Qaleh Cave
Iran12 km19
HöllochGermany11 km96 m20
Mossdale CavernsUnited Kingdom10 km76 m21
Tham LuangThailand10 km85 m22
Spannagel Cave
Austria10 km23
Rivière souterraine de Labouiche
France10 km24
Sumgan-Kutuk
Russia9.9 km25
Govještica
Bosnia and Herzegovina9.7 km26
Kinderle CaveRussia9.1 km27
Skalarjevo brezno
Slovenia8.5 km1,209 m28
Kungur Ice CaveRussia8.2 km29
Lapa dos Brejões
Brazil7.8 km30
Mokranjska Miljacka wellspring caveBosnia and Herzegovina7.2 km31
Cerje caveSerbia7.2 km32
Temnata dupka, Gara LakatnikBulgaria7.0 km35 m33
Ferenc-hegyi CaveHungary6.7 km34
Škocjan CavesSlovenia6.2 km35
Chal Nakhjir CaveIran6.0 km61 m36
Slovačka jama
Croatia5.7 km37
Frasassi Caves
Italy5.0 km38
Orda CaveRussia4.6 km39
Slatinski Izvor
North Macedonia4.0 km40
Buchan Caves
Australia4.0 km41
Belianska CaveSlovakia3.8 km42
Lukina jama–TrojamaCroatia3.7 km43
Liskovská jaskyňaSlovakia3.7 km44
Wookey Hole CavesUnited Kingdom3.7 km45
Bacho Kiro caveBulgaria3.6 km46
Melissani CaveGreece3.5 km37 m47
Labyrinth of Buda CastleHungary3.3 km48
New Athos Cave
Georgia3.3 km183 m49
MorovitsaBulgaria3.2 km150 m50
Kapova CaveRussia3.0 km51
Melouri Cave Natural MonumentGeorgia3.0 km52
Burnik CaveIran3.0 km53
Gupteshwor Mahadev Cave
Nepal3.0 km54
Prometheus CaveGeorgia2.9 km40 m55
Sabart caveFrance2.8 km136 m56
Cetinje Cave
Montenegro2.6 km57
Magura CaveBulgaria2.5 km56 m58
Orlovača caveBosnia and Herzegovina2.5 km59
Ayalon Cave
Israel2.5 km60
Devetashka caveBulgaria2.4 km96 m61
Resava caveSerbia2.3 km62
Cave of NiauxFrance2.0 km63
Cave of the LakesGreece2.0 km64
Abrskil CaveGeorgia2.0 km65
Đatlo caveBosnia and Herzegovina2.0 km66
Bgheri Cave Natural MonumentGeorgia1.7 km20 m67
Stopića CaveSerbia1.7 km68
Yenisu Cave
Turkey1.6 km69
Lava River CaveUnited States1.6 km70
Krásnohorská CaveSlovakia1.6 km71
Lepenitsa caveBulgaria1.5 km72
Devil's CaveGermany1.5 km73
Rudafshan CaveIran1.5 km74
Raychova dupkaBulgaria1.5 km377 m75
Dobšinská Ice CaveSlovakia1.5 km76
Paraw CaveIran1.4 km751 m77
Marble Cave
Kosovo1.3 km78
Ghliana Cave Natural MonumentGeorgia1.2 km79
Banja Stijena caveBosnia and Herzegovina1.2 km80
Lokvarka CaveCroatia1.2 km275 m81
Fingal's CaveUnited Kingdom1.1 km82
São Vicente Caves
Portugal1.0 km83
Devil's Throat CaveBulgaria1.0 km84
Tsutskhvati Cave Natural MonumentGeorgia0.9 km85
Sataplia karst cavesGeorgia0.9 km86
SophienhöhleGermany0.9 km87
Risovača CaveSerbia0.8 km88
Cova del ManelSpain0.8 km89
Hrušovská jaskyňaSlovakia0.8 km90
Arakaevskaya CaveRussia0.8 km21 m91
Felsengarten SanspareilGermany0.7 km92
Azykh Cave
Azerbaijan0.6 km93
Petnica CaveSerbia0.6 km94
Nazodelavo Cave Natural MonumentGeorgia0.6 km95
Važecká CaveSlovakia0.5 km96
Yarımburgaz CaveTurkey0.5 km97
Ilasin CaveRussia0.5 km98
Uhlovitsa CaveBulgaria0.5 km99
Dağlı Kuylucu CaveTurkey0.5 km279 m100
God's BridgeBulgaria0.4 km3 m101
SchulerlochGermany0.4 km102
Snezhanka caveBulgaria0.4 km18 m103
Cova SimanyaSpain0.4 km104
Prohodna CaveBulgaria0.4 km3 m105
Bátori CaveHungary0.4 km50 m106
Idrisovskaya CaveRussia0.3 km107
Ochtinská Aragonite CaveSlovakia0.3 km108
Jomblang Cave
Indonesia0.3 km90 m109
Didghele Cave Natural MonumentGeorgia0.3 km110
Jortsku Cave Natural MonumentGeorgia0.3 km111
Bing CaveGermany0.3 km112
Saint-Léonard underground lake
Switzerland0.3 km4 m113
Navenakhevi CaveGeorgia0.2 km114
Degurić CaveSerbia0.2 km115
SvirchovitsaBulgaria0.2 km39 m116
VenetsaBulgaria0.2 km28 m117
İnkaya CaveTurkey0.2 km30 m118
Saeva dupka caveBulgaria0.2 km40 m119
Kozarnika, Dimovo MunicipalityBulgaria0.2 km120
Solkota Cave Natural MonumentGeorgia0.2 km32 m121
Kitum Cave
Kenya0.2 km122
König-Otto-TropfsteinhöhleGermany0.2 km123
Easter CaveGermany0.2 km124
Manita pećCroatia0.2 km35 m125
Dzudzuana caveGeorgia0.2 km160 m126
GolubnjačaCroatia0.2 km127
Baredine CaveCroatia0.1 km132 m128
Lake Neuron
Albania0.1 km129
Nagarevi Cave Natural MonumentGeorgia0.1 km6 m130
Satsurblia CaveGeorgia0.1 km131
Kobelwald KristallhöhleSwitzerland0.1 km132
Tetra Cave Natural MonumentGeorgia0.1 km7 m
Mammoth CaveUnited States644 km2Optymistychna CaveUkraine265 km20 m3Clearwater CaveMalaysia109 km4Zolushka/Emil Racoviță caveMoldova91 km5Baradla caveHungary26 km6Santo Tomás CaveCuba25 km7Jaskinia Wielka ŚnieżnaPoland24 km8Riesending caveGermany20 km9Jaskyna mrtvych netopierovSlovakia19 km10DuhlataBulgaria18 km53 m11Cueva del VientoSpain18 km12Dan yr OgofUnited Kingdom17 km13Lazar's CaveSerbia16 km14Diros caveGreece15 km15Marie-Jeanne caveHaiti15 km16Tham Phra Wang DaengThailand14 km17Orlova ChukaBulgaria13 km18Quri Qaleh CaveIran12 km19HöllochGermany11 km96 m20Mossdale CavernsUnited Kingdom10 km76 m21Tham LuangThailand10 km85 m22Spannagel CaveAustria10 km23Rivière souterraine de LabouicheFrance10 km24Sumgan-KutukRussia9.9 km25GovješticaBosnia and Herzegovina9.7 km26Kinderle CaveRussia9.1 km27Skalarjevo breznoSlovenia8.5 km1,209 m28Kungur Ice CaveRussia8.2 km29Lapa dos BrejõesBrazil7.8 km30Mokranjska Miljacka wellspring caveBosnia and Herzegovina7.2 km31Cerje caveSerbia7.2 km32Temnata dupka, Gara LakatnikBulgaria7.0 km35 m33Ferenc-hegyi CaveHungary6.7 km34Škocjan CavesSlovenia6.2 km35Chal Nakhjir CaveIran6.0 km61 m36Slovačka jamaCroatia5.7 km37Frasassi CavesItaly5.0 km38Orda CaveRussia4.6 km39Slatinski IzvorNorth Macedonia4.0 km40Buchan CavesAustralia4.0 km41Belianska CaveSlovakia3.8 km42Lukina jama–TrojamaCroatia3.7 km43Liskovská jaskyňaSlovakia3.7 km44Wookey Hole CavesUnited Kingdom3.7 km45Bacho Kiro caveBulgaria3.6 km46Melissani CaveGreece3.5 km37 m47Labyrinth of Buda CastleHungary3.3 km48New Athos CaveGeorgia3.3 km183 m49MorovitsaBulgaria3.2 km150 m50Kapova CaveRussia3.0 km51Melouri Cave Natural MonumentGeorgia3.0 km52Burnik CaveIran3.0 km53Gupteshwor Mahadev CaveNepal3.0 km54Prometheus CaveGeorgia2.9 km40 m55Sabart caveFrance2.8 km136 m56Cetinje CaveMontenegro2.6 km57Magura CaveBulgaria2.5 km56 m58Orlovača caveBosnia and Herzegovina2.5 km59Ayalon CaveIsrael2.5 km60Devetashka caveBulgaria2.4 km96 m61Resava caveSerbia2.3 km62Cave of NiauxFrance2.0 km63Cave of the LakesGreece2.0 km64Abrskil CaveGeorgia2.0 km65Đatlo caveBosnia and Herzegovina2.0 km66Bgheri Cave Natural MonumentGeorgia1.7 km20 m67Stopića CaveSerbia1.7 km68Yenisu CaveTurkey1.6 km69Lava River CaveUnited States1.6 km70Krásnohorská CaveSlovakia1.6 km71Lepenitsa caveBulgaria1.5 km72Devil's CaveGermany1.5 km73Rudafshan CaveIran1.5 km74Raychova dupkaBulgaria1.5 km377 m75Dobšinská Ice CaveSlovakia1.5 km76Paraw CaveIran1.4 km751 m77Marble CaveKosovo1.3 km78Ghliana Cave Natural MonumentGeorgia1.2 km79Banja Stijena caveBosnia and Herzegovina1.2 km80Lokvarka CaveCroatia1.2 km275 m81Fingal's CaveUnited Kingdom1.1 km82São Vicente CavesPortugal1.0 km83Devil's Throat CaveBulgaria1.0 km84Tsutskhvati Cave Natural MonumentGeorgia0.9 km85Sataplia karst cavesGeorgia0.9 km86SophienhöhleGermany0.9 km87Risovača CaveSerbia0.8 km88Cova del ManelSpain0.8 km89Hrušovská jaskyňaSlovakia0.8 km90Arakaevskaya CaveRussia0.8 km21 m91Felsengarten SanspareilGermany0.7 km92Azykh CaveAzerbaijan0.6 km93Petnica CaveSerbia0.6 km94Nazodelavo Cave Natural MonumentGeorgia0.6 km95Važecká CaveSlovakia0.5 km96Yarımburgaz CaveTurkey0.5 km97Ilasin CaveRussia0.5 km98Uhlovitsa CaveBulgaria0.5 km99Dağlı Kuylucu CaveTurkey0.5 km279 m100God's BridgeBulgaria0.4 km3 m101SchulerlochGermany0.4 km102Snezhanka caveBulgaria0.4 km18 m103Cova SimanyaSpain0.4 km104Prohodna CaveBulgaria0.4 km3 m105Bátori CaveHungary0.4 km50 m106Idrisovskaya CaveRussia0.3 km107Ochtinská Aragonite CaveSlovakia0.3 km108Jomblang CaveIndonesia0.3 km90 m109Didghele Cave Natural MonumentGeorgia0.3 km110Jortsku Cave Natural MonumentGeorgia0.3 km111Bing CaveGermany0.3 km112Saint-Léonard underground lakeSwitzerland0.3 km4 m113Navenakhevi CaveGeorgia0.2 km114Degurić CaveSerbia0.2 km115SvirchovitsaBulgaria0.2 km39 m116VenetsaBulgaria0.2 km28 m117İnkaya CaveTurkey0.2 km30 m118Saeva dupka caveBulgaria0.2 km40 m119Kozarnika, Dimovo MunicipalityBulgaria0.2 km120Solkota Cave Natural MonumentGeorgia0.2 km32 m121Kitum CaveKenya0.2 km122König-Otto-TropfsteinhöhleGermany0.2 km123Easter CaveGermany0.2 km124Manita pećCroatia0.2 km35 m125Dzudzuana caveGeorgia0.2 km160 m126GolubnjačaCroatia0.2 km127Baredine CaveCroatia0.1 km132 m128Lake NeuronAlbania0.1 km129Nagarevi Cave Natural MonumentGeorgia0.1 km6 m130Satsurblia CaveGeorgia0.1 km131Kobelwald KristallhöhleSwitzerland0.1 km132Tetra Cave Natural MonumentGeorgia0.1 km7 mLengths as published in Wikidata. Many caves have no published length and are not listed here.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
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beaches
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lakes
Every lake on Earth: water temperature, ice, depth and the shore.Visit 
mountains
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waterfalls
Every waterfall: height, flow month by month and when it roars.Visit 
islands
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rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Visit 
canyons
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caves
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birdwatching
Every bird sanctuary and wetland with the species recorded month by month: who is resident, who comes for the summer, who only passes through.Coming soonVisit 
forests
Every forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Coming soonVisit