Geology doesn’t often go viral, but one Scottish cave managed to do it by looking like something straight out of a video game. A TikTok video showing its jagged, gold-lit columns caught millions of ...

Below the Chihuahuan Desert in southeastern New Mexico, lies an extensive system of limestone caves, among them the famed Carlsbad Cavern, home to one of North America's largest underground chambers.

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, with strange rock formations and the occasional glow from naturally occurring ...

Jewel Cave, located 13 miles west of Custer, has more than 208 miles of “mapped and surveyed passage ways,” with hundreds of suspected passages yet to be explored, according to the National Park ...

Cave formation starts with a simple chemical reaction between water and carbon dioxide in the atmosphere, creating carbonic acid. This weak acid forms when rainwater combines with CO2, then ...

When delicate cave formations are damaged, Carlsbad Caverns National Park calls on the fix-it skills of Michael Mansur and his growing legion of volunteers. Nothing good happens fast in a cave. Those ...

When the summer sun is blazing, there’s no better way to cool off than by heading underground. Caves offer a naturally air-conditioned escape, along with a chance to explore some of the Earth’s most ...