Featured on PBS, the Caverns provides a natural amphitheater with great acoustics perfect for the lilting melodies of bluegrass music. For shows and tickets visit the website. The cost of tickets varies wildly. If you just want to see the caverns, tickets are about $25 per person. The cave system itself is a prehistoric marvel with an underground room that is as big as three football fields. The known passages cover about 8,000 linear feet. If you do attend a show or go cave exploring, bring a sweater or jacket with you; the temperature stays a chilly 59 degrees Fahrenheit year-round.