When Tom Sawyer Island closes at the Magic Kingdom this weekend, Disney World's going to lose most of its cool fake caves.

The Marble Arch Caves in County Fermanagh are one of several locations featured in a new campaign showcasing natural ...

I love caves. They are so cool. You can feel a bit like a professional explorer when checking these things out. You don't have to drive too far to see a giant cave system here in Minnesota. Mystery ...

Eight possible cave openings found on the Martian surface look to have once had ancient streams flowing into them, suggesting ...

The CAVES training tests astronaut teamwork, resilience and scientific focus all needed for the challenges of spaceflight. Many parallels exist between being high above the Earth and deep underground.