For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

Tucked behind an unmarked wall, we found a secret cave entrance that led us on a wild journey - nearly a mile beneath the ...

The moon has a generous underground cave system that we could (maybe) use for bases Subsurface lava tunnels are important for our exploration of the moon. Scientists just found a very promising one.

Laurel Caverns near Farmington isn’t just another hole in the ground—it’s Pennsylvania’s largest cave system, a subterranean playground where Mother Nature decided to show off her artistic side.

Mitchell Caverns feels like stepping into a fantasy world with its bizarre formations. The two connected caverns, El Pakiva ...

Boyden Cavern in Kings Canyon National Park offers visitors a glimpse into a glittering underworld, thanks to preservation ...