Explore the world's longest known cave system and see colorful, subterranean light displays in these incredible caves that ...

The air is cool and damp. The light shining from behind is low and tinted, while a park ranger's hand hovers over a button. Then, a switch clicks. Light floods a chasm in the stone, a chamber called ...

Mammoth Cave National Park is Kentucky's lone national park. However, it isn't the only cave in Kentucky, or even the area. There are even more caves near the park and around the state than the caves ...