The largest public cave formation in Tennessee, the Cumberland Caverns should be on every adventurer's to-do list. At the caverns, you can join the daily guided walking tours that include historical information on caving and the significance of saltpeter mining for gunpowder munitions. Cumberland Caverns also offers daytime and overnight adventure spelunking tours for groups of all ages as well as bus tours for larger groups. The formations and size of the caverns are the best in Tennessee and rival the splendor of many of the well-known caves in central Kentucky. Visitors to Cumberland Caverns should plan ahead for a 1.5-mile (2.41-kilometer) walk through temperatures hovering in the mid 50s. A light jacket and good walking shoes are recommended to make a visit to the Cumberland Caverns even more enjoyable.