Two 325-million-year-old ctenacanth shark fossils discovered in Mammoth Cave shed light on ancient marine ecosystems.

It's the third-largest cave in the world, with a ceiling that reaches 145m (475ft) at its highest point, and the widest section of the passageway reaching up to 200m (656ft), according to Oxaxlis ...

"This immense cave represents the most important submerged archaeological site in the world, since it has more than a hundred archaeological contexts, among which is evidence of the first settlers ...

Despite all those years of exploration, still each year, courageous cave explorers discover new tunnels and rooms underground and thereby stretch the known limits of the world's longest and ...

For hundreds of years, different cultures and religions around the world have used caves as spaces for worship, meditation, art, and burials. Find intricate carvings of Hindu deities, learn the ...

the sound can be heard anywhere from within the cave system, which covers about 64 acres (260,000 square meters). That makes it the largest musical instrument in the world. We’ll save the ...

A cave painting in Indonesia is the oldest such artwork in the world, dating back at least 51,200 years, according to an international team of researchers who say its narrative scene also makes it ...

The idea of another world existing beneath our feet is both thrilling and terrifying — and it’s the reality at Mammoth Cave National Park, which has the longest known cave system in the world.

Dr. Maxime Aubert, archeologist and geochemist, uses his headlamp to examine the cave art at Leang Lompoa in Maros, Indonesia. Justin Mott I struggle to keep my footing on a narrow ridge of earth ...