The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world. Geologists think it ...

Located in Abkhazia, Georgia, the Veryovkina Cave has a depth of 2,212 metres, making it the world’s deepest cave. It was first discovered in 1968 by cavers from the Russian city of Krasnoyarsk.

Blind spiders and whip scorpions, the future of climate change, photosynthesis in the dark – here's what the deepest places on Earth can reveal about life and the universe.

Down here, under the Earth, there is utter darkness ... 12km (7 miles) long and 1.2km (0.7 miles) deep, the J2 cave system is hidden deep within the Sierra Juárez mountains of Southern Mexico.

Beneath the island’s rainforest, explorers search for new discoveries deep within some of the Earth’s largest, longest, and wildest caves. At dusk, a swarm of bats disperses to hunt in the ...

Ellison's Cave is also situated on an active fault within Earth's crust. Over time, the slightly acidic water has dissolved the rock along these deep fractures, slowly expanding them into vertical ...

Probably no other place on Earth has as many accessible lava tubes ... Mexico, the second deepest cave in North America. He’s the president of the Cave Conservancy of Hawaii, a nonprofit trust ...

Our drive to understand the evolutionary history of life on Earth leads us to search for clues deep underground. Cave divers are at the forefront of this research, helping us access some of the ...

Descent into a cave is about overcoming obstacles the manifestation ... his team of Moscow extreme cavers were discoverers of the deepest secrets of the planet They set a new world record the ...