Do the overnight wild tour! It's about an hour of spelunking and it's tight!
Go see some bluegrass in a cave!
This was so cool, just be prepared to hike inside of the caverns. If you plan your trip right you can even camp in the caverns, really cool.
Be prepared to hike in the cavern, very cool though. Literally cool stays like 58 degrees year round. Plan your trip right and you can camp in the cavern, very cool.
You can also check out a live concert in the cave at the Volcano Room. http://www.bluegrassunderground.com/
Best Places to Check out in United States Pt 4