Around 700 CE ancestors of modern Puebloan people moved to the site, constructing stone and mortar buildings and granaries. Humans have lived in the area around Natural Bridges since as early as 7500 BCE, as shown by rock art and stone tools found at nearby sites. There is evidence of at least two collapsed natural bridges within the Monument.
Eventually, as erosion and gravity enlarge the bridge's opening, the bridge collapses under its own weight. During periods of flash floods, particularly, the stream undercuts the walls of rock that separate the meanders (or "goosenecks") of the stream until the rock wall within the meander is undercut and the meander is cut off and the new stream bed then flows underneath the bridge. A natural bridge is formed through erosion by water flowing in the stream bed of the canyon. The three bridges in the park are named Kachina, Owachomo, and Sipapu (the largest), which are all Hopi names. It features the thirteenth largest natural bridge in the world, carved from the white Permian sandstone of the Cedar Mesa Formation that gives White Canyon its name.
National Monument located about 50 miles (80 km) northwest of the Four Corners boundary of southeast Utah, in the western United States, at the junction of White Canyon and Armstrong Canyon, part of the Colorado River drainage. Natural Bridges National Monument is a U.S.
Horsecollar Ruin Owachomo Bridge Owachomo Bridge at night Kachina Bridge
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