You’ll want to reserve tickets now to explore Crystal Cave, which will once again welcome visitors from May 23 to September 7 ...

Known as the "hidden secret of Decatur County," Go-Astronomy says that Nine Eagle State Park is the only dark sky park in ...

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.

Natural Tunnel State Park represents Virginia at its most geologically spectacular yet remains surprisingly under-visited ...

A teenager in Iowa discovered a 34,000-year-old mastodon jawbone while walking near a creek on a friend’s farm. Experts say ...

The cave is one of about 275 known caves in Sequoia and neighboring Kings Canyon National Park. The park's only publicly accessible cave, it has been open to visitors since the 1940s, making it one of ...

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

A priest with a rock collection and a massive vision turned this corner of Iowa into a legend. The Grotto of the Redemption ...

Researchers use a portable fluorescence spectrometer to analyze the glowing formations in underground caves. Now, researchers ...

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

Inside Wind Cave the scientists found that chemicals fossilised within the rocks shine in brilliant hues of pink, blue, and ...

Fluorescent caves on Earth may hold the secrets to survival necessary for scientists to detect life elsewhere in the universe.