Located in scenic Sequoia National Park, this sprawling marble cavern will once again welcome visitors after a four-year ...

The stalactites and stalagmites of Sequoia National Park's Crystal Cave, a sprawling subterranean wonder that's been closed for four years, will be accessible again this summer. But to get in during ...

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath ...

Astrobiologist Joshua Sebree of the University of Northern Iowa suggests that South Dakota's Wind Cave exhibits chemical similarities to Jupiter’s icy moon Europa.

Most people think of visiting big cities, national parks, and beaches when they plan a U.S. trip. There’s hardly anyone who’s ...

Findings about the chemical makeup of cave systems can teach us about life in places humans have yet to reach.

A team of researchers at the University of Northern Iowa (UNI) is exploring some of the deepest caves in the country to learn more about life in extreme environments.

Deep below Earth's surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry ...