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Full moon over Balanced Rock, Arches National Park, 2015.

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Summary

Arches National Park has the densest concentration of natural stone arches in the world! Over 2,000 arches are documented in the park, ranging from sliver-thin cracks to spans of 300 feet (97 meters). The park has just the right combination of fine-grained sandstone atop a denser layer of sand and clay which combine with buried layers of salt and a small amount of precipitation (about 8-10 inches per year). This cracks the ground and erodes at just the right rate to create these arches instead of eroding equally across the region.

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Date

2015
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Source

National Parks Gallery
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