In a remote forest, researchers stumbled upon a 200 foot vertical sinkhole leading to a network of underground caves. The ...

When delicate cave formations are damaged, Carlsbad Caverns National Park calls on the fix-it skills of Michael Mansur and his growing legion of volunteers. Nothing good happens fast in a cave. Those ...

The cave myotis aren't endangered, Bilbrey said, but, by nature, a "living cave" always is fragile. Kartchner is referred to as a living cave because the formations inside it are still growing, a ...

The hidden world of a Grand Canyon cave and the researchers working to unravel the mysteries contained in strands of ancient ...

These stunning caves in Kentucky feature waterfalls, crystal walls, and otherworldly passageways that look like they’re from ...

A skull found in Petralona Cave in Greece is at least 286,000 years old, revealing the existence of an ancient human species still unknown.

To see a video of the tube-forming process, go to http://www.physics.arizona.edu/~gold/big_tube2b.mpg An accidental discovery may provide insights into the creation ...

Two years passed since the public could walk through the 200-feet-deep cave of Blanchard Springs Caverns — the COVID-19 pandemic, repairs and the spread of white nose syndrome among bats put on the ...

The limestone labyrinth was, however, modified for human exploration in the early 1900s. Mills turned wall lights on and off ...

Graffiti has become a growing problem inside Ape Cave at the Mount St. Helens National Volcanic Monument over the last few years. U.S. Forest Service officials say they’re working on a plan to remove ...

Graffiti has become a growing problem inside Ape Cave at the Mount St. Helens National Volcanic Monument over the last few years. U.S. Forest Service officials say they’re working on a plan to remove ...