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Tonto Natural Bridge, Tonto Natural Bridge State Park, Arizona
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Tonto Natural Bridge is a natural arch in Arizona, USA, that is believed to be the largest natural travertine bridge in the world. Tonto Natural Bridge stands over a 400-foot-long (120 m) tunnel that measures 150 feet (46 m) at its widest point and reaches a height of 183 feet (56 m).
You can see the Natural Bridge from four different parking lot level viewpoints without hiking down to the bottom.
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