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 ...

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 ...

Beneath its gently rolling hills lies Mammoth Cave, the world’s longest known cave system, offering a mystifying underground world of echoing chambers, cathedral-like tunnels, and prehistoric wonders.

So many of the hidden spots in Mammoth Cave National Park lie beneath the surface. This popular park in Kentucky is home to the world's longest known cave system, and it draws thousands of visitors ...

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 ...

Mammoth Cave, the world's longest known cave system, stretches 426 miles under Kentucky. The cave's limestone began forming 330 million years ago when the region was submerged under an ocean. Visitors ...

At around 125 million years old, the Cascade Caverns cave is geographically young, but it obviously holds a lot of history. Spelunking through the entrance, your change in elevation is marked by a ...

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 ...