Colossal Cave

Located 22 miles south of Tucson. I-10 east to the Vail/Wentworth exit 279, then seven miles north. Considered to be the world’s largest dry cavern, its complex lighted passageways, chambers, and myriad crystal formations were once a shelter for prehistoric people. Take a guided cave tour. Picnic areas, campsites, and Western trail rides are also available. Admission fee.