Tonto Natural Bridge State Park Between Pine and Payson, Arizona is the Tonto Natural Bridge, widely believed to be the largest natural travertine (calcium carbonate) bridge in the world. At 183 feet high, the bridge spans an area over a 400-foot tunnel that is 150 feet at its widest point. There are several short trails in the park that allow you to hike through the arch. All are safe for children although parts of the trail are very slippery. I like this destination because it involves a bit of hiking, rock scrambling and water. What could be better! From Phoenix take AZ-87 north for about 100 miles. www.azstateparks.com/tonto
Tonto Natural Bridge | Credit: David Aiello The sunlight highlights water flowing over the arch into the tunnel at Tonto Natural Bridge. www.facethecurrent.com
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