Grand Canyon Caverns, Mile Marker 115, Route 66, ☎ ''+1 928'' 422-3223 (email@example.com), . Call for hours. The largest dry cavern in the United States. The Regular Tour is a 45-minute, 3/4 mile (1 km) walking tour. A 25 minute Short Tour is available. The Explorers Tour is an off-trail caving tour of groups of 2-6 persons. The caverns are a constant 56º (13º C) even during the heat of summer so a sweater or jacket is recommended.Regular tour: Adults - $14.95, Children (4-12) - $9.95; Explorers tour:$44.95 (AAA and AARP discount available). edit
Whitewater Rafting in Grand Canyon: 1-day trip meets at 7.30 am at Hualapai River Runners Lodge, returns at approximately 6 pm. includes helicopter flight out of canyon, box lunch, 35 miles of river and 7 wet rapids in the first 10 miles.