Visitors to Sand Cave, tucked inside Cumberland Gap National Historical Park, will be surprised to find themselves standing on beach-like sand, rather than stone. The cavern’s sandy floor is mostly due to erosion. The cave was once a huge piece of sandstone, but over many years, wind hollowed out the rock, forming Sand Cave, a 250-foot wide grotto filled with, you guessed it: sand.
These days, few venture into Sand Cave, most likely because of the long hike to get to it. However, those who do take the time to visit this cavern are sure to be impressed with the sheer scale of the structure, as well as the scenic woodlands around it.