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

"Discover why a man didn’t survive the world’s deepest cave and the dangers of extreme depths. Secret History uncovers the ...

Two decades later, I organized a series of expeditions to investigate new deep caves, using dye traces in cave streams to probe Arabika’s potential depth. In 2001 a team led by Ukrainian Yuri ...

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.

More is known about the terrain of Mars than about what lies hidden beneath the Earth’s surface. Krubera Cave in the republic of Georgia is currently the deepest known cave, at 7,208 feet.

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 ...

What attracts them is Boybuloq - at 1,415 metres (4,640 feet) - Asia's deepest cave. Uzbekistan's mountains still have an air of mystery and are amongst the least explored anywhere. That's ...

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 ...

Members of Russian Geographical Society’s cave exploration team have found at least four previously unknown animal species and new underground tunnels with large caverns in the deepest cave ...

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 ...