The Lava River Cave outside of Bend is a mile deep and 60 feet tall. Here's how to explore Oregon's longest lava tube.

The Carlsbad Caverns are a New Mexico gem located in the Guadalupe Mountains. It’s one of over 300 limestone caves, with a ...

Fossils from a new species of shark have been discovered in Kentucky's Mammoth Cave, increasing our understanding of ancient ...

The Saint-Marcel cave network in southern France has long captivated the imaginations of explorers and scientists alike. Its ...

The Trump administration has cut staff by more than 24% at the National Park Service since January. Republicans in Congress ...