Earth not only does not support diverse ecosystems, but it also has places that serve as analogs for other celestial worlds ...

Deep within the Cova de les Dones cave in Valencia, Spain, archaeologists found a Roman sanctuary dating back to around the 1st century CE. A team of researchers from the University of Alicante ...

Don, 64, was a guide at Mammoth Cave for 10 years and spent 18 winters on the legendary expeditions that helped expand the map of Chevé in Oaxaca, Mexico, the second deepest cave in North America.

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 ...

Deep below the Earth’s surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the chemicals fossilized within shine in brilliant hues of pink, blue and green.

The Burj Khalifa would go 2,722 feet below the surface. The deepest known point in a cave is in Krubera Cave in Georgia. Switzerland's Gotthard Base Tunnel is the deepest railway tunnel.

All the Latest Game Footage and Images from Deep the Game: The Darkest Cave Welcome to The Darkest Cave - the most mysterious, hidden, and dangerous part of Deep. Apart from the danger from the ...

Deep inside a labyrinthine cave in southwestern France, ancient humans who lived around 30,000 years ago carved horses, ...

A Russian expedition, accompanied by two British cave photographers, descended into the depths of one of the world's deepest caves in the remote Gagra Mountains of Abkhazia in the Caucasus.