The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have mapped 524 kilometers (325.6 miles) of a subterranean water 'web' near ...

Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

Postojna Cave is famous for its five-metre-tall bright-white stalagmite called Brilliant. Postojna Cave, and the surrounding ...

The world’s longest underwater cave system now stretches an astonishing 524 Kilometers, a hidden labyrinth that, in raw length, outstrips the Grand Canyon. Threaded beneath Mexico’s Yucatán Peninsula, ...

Deep inside a limestone cave on the Indonesian island of Sulawesi, a single human handprint has pushed the story of art back to at least 67,800 years ago. The stencilled outline, created when someone ...

The air is cool and damp. The light shining from behind is low and tinted, while a park ranger's hand hovers over a button. Then, a switch clicks. Light floods a chasm in the stone, a chamber called ...

The Mermaid Cave in Thung Nham reveals a mysterious underground world of glittering stalactites, emerald waters, and natural ...

Deep within a cave on New Zealand’s North Island, scientists have uncovered a long-lost record of life from a million years ago.

A team of researchers from the University of Adelaide, in collaboration with cavers, has uncovered a large number of eyeless, cave-adapted invertebrates—including spiders, cockroaches, centipedes, and ...

The dark bowels of a limestone cave on Muna Island, off the coast of Sulawesi in Indonesia, just yielded an ancient secret. There, a team of archaeologists has discovered human-made rock art older ...