Naturally formed Sand Cave in Cumberland Gap offers an unusual, yet amazing view of where ancient Kentuckians might have lived. Cumberland Gap is also home to the 2400 foot pinnacle where one can view Kentucky, Tennessee and Virginia simultaneously.
Mammoth Cave Kentucky: 5 Things To Do With Your Kids
Explore up to ten miles of the incredible Mammoth Cave, the world's longest cave system and a World Heritage Site. It boasts 390 miles of explored caves and more that's yet to be mapped. Walking tours of the caverns leave from the visitor center daily.
Mammoth Cave National Park, Kentucky, USA, encompasses part of Mammoth- Flintridge Cave System the longest cave system in the world. It is over twice as long as the second largest cave system, Mexico's Sac Actun underwater cave.