Hidden River Cave and the American Cave Museum are operated by the nonprofit American Cave Conservation Association (ACCA). Our historic cave tour will take you through one of Kentucky’s largest and most scenic cave entrances where two subterranean rivers flow over one-hundred feet below ground. Walk across the world’s longest underground swinging bridge and step up into Sunset Dome, one of the largest free-standing cave domes in the United States. You’ll pass the remnants of a turn-of-the-century hydroelectric generating system that once supplied the town overhead with water & electricity and explore areas with seldom seen creatures that live in the darkness underground. The American Cave Museum has been called “a little bit of the Smithsonian in rural Kentucky.” Discover the history and science of America’s natural caverns through educational and informative exhibits. Your visit to Kentucky Cave Country will not be complete without an in-depth look at the fascinating world of caves. Hidden River Cave and the American Cave Museum are centrally located. We’re just 90 minutes from Nashville, TN and 75 minutes from Louisville, KY. We’re also pet friendly!