To get to Cave 338, high in the Pyrenees mountains, you must go primarily by foot. That’s exactly what a team of ...

In 1965, a diver named Jim Houtz dove into a desert pool in Nevada and descended to over 300 feet without reaching the bottom. To date, no one has been able to figure out how deep that cave actually ...

Another case study is the mysterious underground cave complex situated in the southern part of Europe and has been baffling ...

Did you know some caves actually glow in the dark? Discover stunning bioluminescent caves around the world with glowing walls ...

FILLMORE COUNTY, Minnesota (WCCO) — The Fillmore County countryside contains thousands of acres of green, lush farmland, but some people here believe what’s below the surface is just as beautiful.

An impression made in clay around 175,000 years ago could be a kneeprint left by one of the builders of a strange stalagmite ...

BILLINGS — Access to one of Montana’s largest caves used by bats for winter hibernation could be reopened to explorers under proposals drafted by the Bureau of Land Management. As proposed, the agency ...

The nearest town to Phantom Springs has a population of 435, and the cave is located on land owned by the U.S. Bureau of Reclamation in the West Texas desert. Scientific permits are required to enter, ...