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

Billionaires are building ultra-luxury doomsday bunkers that rival five-star resorts with lavish amenities beneath the earth.

That gust of cool air is what led two National Park Service employees to stumble upon Crystal Cave while fishing at a nearby ...

Carved from stone over thousands of years, caves are nature’s underground masterpieces. Here’s the wild process that turns solid rock into surreal worlds—math errors and all.

And tucked away in the southwestern corner of Missouri, in the small town of Noel (pronounced “Nole,” not like Christmas), Bluff Dwellers Cave stands as one of the most spectacular examples of ...

The mineral-rich Arctic island is open for tourism. Locals want to show what makes Greenland unique beyond a recent ...

A new study from SapienCE reveals that early modern humans at Blombos Cave in South Africa used ochre as a specialized tool ...