Deep underground, flowing water leads explorers into a cave shaped by constant motion and time. The waterfall inside Nash Cave reveals narrow passages, slick rock, and areas rarely documented.

Chinese astronauts, known as taikonauts, were sent into a large limestone cave system in a remote area of China.

Join us as we descend into the legendary 125-foot Warm Up Pit in Ellison’s Cave, one of Georgia’s most iconic vertical caving spots. Located in the heart of Pigeon Mountain, this technical drop offers ...

I'm a severe claustrophobe. After getting trapped in a slide in my local McDonald's at five years old, I swore off all tight and dark spaces forever. So it's not entirely surprising that I couldn't ...

On this episode, we hear how a team of researchers at the University of Northern Iowa is exploring the deepest caves in the U.S. with NASA funding. This could inform the search for life on other ...

CHONGQING, Jan. 5 (Xinhua) -- China's first astronaut cave-training mission has been completed in its southwestern Chongqing Municipality, with 28 astronauts having taken part.