Mammoth Cave National Park

Since the 1800s, Mammoth Cave has been a hotbed of scientific discovery, but the history of the caves goes back even further. The first American Indian explorers entered the cave around 5,000 years ago, and for nearly two centuries Native Americans explored and mined the upper three levels of Mammoth Cave.

Mammoth Cave is the world’s longest known cave system, with more than 400 miles explored, and one of the oldest tour attractions in North America.