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cavernyas
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Type of cave

Underground lakes

22 caves with water still in the dark: underground lakes, cenotes and blue holes.

124 mGreat Blue HoleBelizeBelizeWorld Heritage37 mMelissani CaveGreeceGreece3.5 km5 mMoqua WellNauruNauru160 mWild LakeSloveniaSlovenia84 mDrachenhauchlochNamibiaNamibia4 mSaint-Léonard underground lakeSwitzerlandSwitzerland0.3 kmSacred CenoteMexicoMexicoWorld HeritageNutty Putty CaveUnited StatesUnited StatesBlue HoleEgyptEgyptDevils HoleUnited StatesUnited StatesDean's Blue HoleBahamasBahamasIk KilMexicoMexico420 mTaam ja’ Blue HoleMexicoMexicoLake NeuronAlbaniaAlbania0.1 kmHorne Lake Caves Provincial ParkCanadaCanadaLake Shasta CavernsUnited StatesUnited StatesChoo-HaMexicoMexicoLake Sai Bat CaveJapanJapanBlue HoleMaltaMaltaCharlie Lake CaveCanadaCanadaGouffre de l'Œil DouxFranceFranceAbisso BonettiItalyItaly

A cave enters a type from Wikidata, its name, OpenStreetMap, the river at its mouth and the sister atlases. Some may be missing; none is invented.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Visit mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Visit islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Visit riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.Visit canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit
cavesCavernyasEvery cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.You are here
dark skiesDarkskyasWhere the night is still dark: the sky of every place, the Milky Way month by month, the Moon, eclipses and auroras.Coming soonVisit
viewpointsViewyasEvery viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.Coming soonVisit
birdwatchingBirdyasEvery 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
forestsForestyaEvery forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Coming soonVisit