Experience the incredible Mammoth Cave in Kentucky, officially the world’s longest cave system with over 426 miles explored.

This incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region.

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 ...

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 ...

A rare bite into the past. The fossilized tooth of a newly discovered ancient shark species – dating back about 340 million years – has been unearthed in the world’s largest cave system, officials ...

The fossil was found in the Ste. Genevieve Formation, which dates to approximately 335 to 340 million years ago. It was discovered by a combined team of scientists from the National Park Service ...

Deep beneath Kentucky’s rolling hills, in the dark reaches of Mammoth Cave National Park, paleontologists have unearthed the ...

With over 400 mapped miles, Mammoth Cave National Park, just outside Bowling Green, Kentucky, is the longest known cave system in the world. The only way to see its many subterranean rooms and ...

Mammoth Cave’s annual Cave Sing returns with choirs performing inside the iconic cavern, offering one of Kentucky’s most ...

National Park Service sites in Kentucky appear to be operating without several services normally offered to visitors after a federal government shutdown began Oct. 1. While roadways and trails ...