Explorers recently mapped a cave system approximately 16 miles in length running adjacent to a river, revealing massive ...

Looking for an adventure that’s cool (literally) and completely out of the ordinary? The United States is home to some of the ...

This historic cavern located in Boerne is 125 million years old, and the oldest show cave in Texas. Once believed to be an ...

Though cave tours at the Mammoth Cave National Park have been suspended, visitors can still access campgrounds and trails.

Images from around the world, featuring events from the past seven days, including major storm damage in coastal Alaska, a ...