extraordinary tufa mounds, and monstrous waterfalls. A spectacular limestone cave system creeps below the surface, while an ...

Within the caves, the monochrome lifelessness of the desert gave way to an exuberance of color and movement. Thousands of Buddhas in every hue radiated across the grotto walls, their robes ...

Back home, Peter marked the puka, or cave entrance, on a digital map and planned to return later—with the landowner’s permission—to see where the opening might lead. Author Joshua Foer ...

Discover rose-tinted valleys, towering ‘fairy chimneys’ and entire underground cities on a visit to this spectacular area of ...

Three North Dakota landmark destinations have made a list of places to visit when international travelers don’t want to go to ...

Foreign divers, including Ivan Karadzic (2nd left) and Erik Brown (3rd right), were part of the extensive rescue operations The rescuers who worked to save the group trapped in a Thai cave were a ...

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. A mile and a half beneath the ocean’s surface, the ...

A tourism brochure for New Zealand's Waitomo Caves from 1928 What’s waiting for us within the mysterious depths of a cave? It’s been the stuff of legend and campfire stories for centuries.

14,700 years ago, in a cave in Somerset, our ancestors were eating other people. Museum research reveals these Ice Age Britons weren't eating human flesh out of necessity but as part of a ritual. 'The ...

Carlsbad Caverns is a maze of underground caves born from an ancient tropical reef. The caverns house North America's largest cave chamber, "the Big Room," which boasts a floor area of 8.2 acres ...