Just outside Mammoth Cave National Park, this charming Kentucky city has plenty of thrilling activities and outdoor ...

One of Kentucky's most awe-inspiring attractions is Mammoth Cave National Park, which promises unique above and underground adventures ... a seasonal garden filled with hundreds of butterflies ...

The umbrella leaks at places called sinkholes, from which surface water makes its way underground, eroding the limestone into a honeycomb of caverns. Mammoth, the world's longest known cave system ...

From intricate cave formations to the deep sense of history hidden within their walls, these underground wonders end up amazing everyone who walks through these caves, tourists and locals alike.

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath Earth’s surface, rock and mineral formations conceal a hidden brilliance. When ...

Whether you're drawn to geology, adventure, or simply the strange beauty of the underground, these seven caves are unforgettable stops that deserve a place on your U.S. travel map. Tucked beneath ...