Mammoth Cave in Kentucky is 426 miles long and is the longest known cave in the world. Scientists, however, are of the strong ...

Vietnam's Son Doong, the world's largest cave passage, started its life millions of years ago as a crack the width of a piece ...

Son Doong, the world's largest cave passage — big enough to fit a skyscraper — is deep inside a Vietnamese jungle. Exploring ...

On Sunday’s episode of The Excerpt podcast: Hidden beneath Earth’s surface are caverns and pathways that hold the secrets of our planet’s very beginnings. Even after decades of exploration, there are ...

The discovery of more than 100 prehistoric structures in the Cova Dones cave in Spain makes it one of the most significant prehistoric underground sites in the world. Archaeologists found stalagmites ...

Beneath the surface of an otherwise unassuming National Park, a labyrinth showcases hundreds of millions of years of geologic history. Each shade of tan layered on the walls represents a different era ...

There’s something about cave exploring that intimidates me. Perhaps it’s venturing below ground or the feeling of being enclosed, but the whole experience strikes me as a bit off-putting. That being ...

For outdoor enthusiasts, it can sometimes feel like everything has been done; every trail has been hiked, every mountain has been climbed. But what about diving below the surface? If you enjoy ...

Cave City, the home to Mammoth Cave National Park, is giving visitors reason to stop and explore. Cave City in Barren County is home to Mammoth Cave National Park. Over the years, the city has gone ...

1 of 4 — Cave Point Country Park at Door County in Wisconsin 3 of 4 — The Visitor Center at Cave of the Mounds. Blue Mounds, WI, United States, May 4, 2023. Cave of the Mounds, a natural limestone ...