Each of these caves has unique features that set them apart from other caves in the U.S., whether it's a distinct biological phenomenon, geologic features, or a strange history.

Deep inside Pettyjohns Cave, we stumbled across a network of strange water tunnels that felt like something out of another world. Wading through tight, flooded passages and echoing chambers, ...

A new species of coral has been discovered that clings to the ceilings of underwater caves in the western Pacific's Coral Triangle. IE 11 is not supported.

News; Weird News; Aliens; Cave explorer discovers hidden terrifying 'baby alien' skeleton as locals claim 'it isn't human' Edu Survivencia was exploring caves in Monterrey, Mexico, in a protected ...

Critters After a Long Saga, a Weird Little Texas Cave Critter Is Staying on the Endangered Species List The blind, elusive Bone Cave harvestman was at the center of a right-wing attempt to weaken ...

The landscape is stark, dark and dramatic, formed by a series of eruptions in the last 16,000 years that have stacked layer ...

Also known as the cave state, Missouri boasts nearly 7,500 caverns including the "Devil's Den" and Crystal Cave. ... You will experience well-lit walkways and strange cave formations.