Mammoth Cave is the world’s longest known cave system, stretching over 426 miles of mapped passageways and explorers believe ...

Limestone cliffs and cave systems hold clues to a prehistoric ocean.

A limestone mine is already big enough to feel unreal. But finding a cave hidden inside that mine takes the whole thing to ...

The first paleontological study of its kind is challenging what we thought we knew about the state’s natural history.

Abandoned limestone town remnants, remote Upper Peninsula scenery, and a record-holding cave make this one of Michigan’s ...

A skeleton discovered deep inside a remote limestone cave in Borneo shows a carefully healed lower-leg amputation dating to about 31,000 years ago. Dating was supported by radiocarbon testing of ...

An underground stream winds through a vast Illinois cave few people know about. Wade through cool water and explore one of the state’s most surprising adventures.

Red ochre burials, ritual markings and myths across cultures show that red repeatedly marks liminal thresholds such as ...

Lying face-down in a floating cabana during an aromatherapy massage in a 500,000-year-old cave is the closest thing to nirvana I've ever experienced.

Researchers had long assumed the art inside Font-de-Gaume in France was made with pigments that couldn't be analyzed using ...

The cenotes of Mexico are famous not only for their beauty, but for the archaeological finds they reveal.

Texas is full of surprises, but discovering a cave that was literally ripped open by an earthquake ranks pretty high on the ...