![](http://www.alamy.com/thumbs/6/866A617B-F183-4BC9-A539-FF6D5BDAC6F9/BJKD3M.jpg)
Tonto Natural Bridge near Payson, Arizona, USA. The largest natural travertine bridge in the world.
A series of underground springs with mineral-laden waters have built up large deposits of travertine (calcium carbonate) through which Pine Creek, a year-round stream flowing through the canyon, has eroded a passageway leaving the rocks above standing a natural bridge. Depending on which dimension is used as a measurement, Tonto is the worlds largest travertine bridge - 180 feet high, 400 feet long and about 100 feet thick on top.
Size: 3344px × 5030px
Location: Payson, Arizona, USA
Photo credit: © Brian Green / Alamy / Afripics
License: Licensed
Model Released: No
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