Cutting a jagged path through the limestone of the Arabika massif on the edge of the Black Sea ... Cave drops down a chain of pitches, cascades, and pits—some more than 100 meters (328 feet ...

The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world. Geologists think it could extend more than half a mile (1 kilometer) below Earth's ...

“The deep sea, outer space, and caves: Those are the only frontiers left,” says Coons, who does his exploring in a lightweight helmet with a small flashlight duct-taped to the brim.

The deepest free-fall pit in the lower 48 United States, the Fantastic Pit features a staggering 586 feet (179m) drop - a ...

The deep sea, outer space, and sure, Movile Cave – where nothing went in and nothing went out for over 5 million years. The cave is situated a few miles from the Black Sea coast in Romania ...

Yet, found in the western Pacific Ocean, in the ocean territory of the Federated States of Micronesia, lies the deepest point of the seabed - that we know of so far. It is found within the ...

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 ...

The caves once existed above the water line, but were flooded when sea levels rose. Deep within these underwater caves are formations which can only be formed in dry caves - spectacular sculptural ...