When Floyd Collins ventured into Sand Cave in Kentucky on Jan. 30, 1925, he was searching for the next big attraction. But he never made it out alive.

Here are five of the most breathtaking underwater caves you need to see: One of the most famous underwater caves in the world, the Blue Hole is a giant sinkhole located off the coast of Belize. The ...

Floyd Collins got trapped in a Kentucky cave 100 years ago this week, an incident that led to the creation of Mammoth Cave ...

Aloft features a vast world where you have to pilot your own island as you explore the endless sea of skies. To make sure ...