Provided by Visit Tucson:
A retreat from summertime heat, two underground caves outside Tucson beckon with cool adventures for the entire family. Colossal Cave, 25 miles southeast of downtown Tucson, is a dry, limestone cave with more than two miles of maze-like passageways and a steady temperature of 70 degrees. Regular guided tours are half-mile in length and offered daily without reservations. Candlelight and Ladder Adventure Tours are scheduled by reservation only (520-647-7275). Kartchner Caverns, 40 miles southeast of Tucson, is rated one of the World's Top 10 Caves by experts for its vast and incredibly unique mineral formations. Inside are two galleries the size of football fields, each with 100-foot ceilings and thousands of jaw-dropping stalactites and stalagmites; the temperatures average around 68 degrees. Guided tours of the Rotunda and the Throne Room last about 90 minutes and are a half-mile in length. Reservations are required (520-586-2283).
Venue: Colossal Cave and Kartchner Caverns