If you visit one cave in Tennessee, Cumberland Caverns should be the one!
Cumberland Caverns is Tennessee's largest show cave and a U.S. Natural Landmark. The cave displays some of the largest underground rooms and spectacular formations in eastern America, featuring waterfalls, gleaming pools, and even a 3/4 ton chandelier! The historic 1812 saltpeter mine and the "Historical Light Show," an original underground pageant of light and sound, is shown on every tour. Open year-round, 9am to 5pm. Special tours for schools, scouts, youth groups, and bus tours throughout the entire year by 14-day advanced reservations.