Mammoth Cave National Park, Central Kentucky, USA. The longest known cave system in the world. There are over 400 miles of caves that have been explored.
Mammoth Cave is the world’s largest cave system with over 300 miles of documented passageways. The cave is so large that many researchers suspect there are hundreds of miles of cave that haven’t even been discovered. Mammoth Cave National Park is sure to make for an exciting day trip as you explore the natural wonder of the cavern and learn about Kentucky cave history.
The oldest part of Mammoth Cave in Kentucky was formed 10 million years ago, 9.5 million before Homo sapiens made an appearance.