This cave pool, found in the Lechuguilla Cave of New Mexico, appears to be completely pristine. It was discovered in October at Carlsbad Caverns National Park. Max Wisshak photo/Carlsbad Caverns ...

A state park in eastern Kentucky is throwing a summer party pool, but instead of being under the sun, it'll be deep inside a cave. This year, Carter Caves State Resort Park is opening up Cave Branch ...

Anyone who has ever watched the horror film “The Descent” will tell you: Nothing good can come out exploring deep, dark caves. But we’re sure there’s nothing disturbing about this cave that’s landed ...

An incredible cave network has been discovered 700ft below a national park. Stunning pictures show a "wondrous" blue pool - never before been seen by human eyes - which was found in the depths of ...