In the Arizona desert, researchers are uncovering extraordinary details about the peoples who have inhabited this land since ...

Cave art has mesmerized people for so long, but a talented creator has turned New Mexico's underground into settings for ...

While recently exploring a partially-flooded chamber tucked 650 feet deep inside a Spanish cave, archaeologists noticed an old coin wedged into a crack in the rocky ceiling. And when researchers ...

Passing by a series of subterranean geological features named cave chocolate, cave bacon and cave popcorn, I start to wonder ...