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Sandstone Boulders

Petrified Forest National Park

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ADDED: Jul 17, 2005 12:16 VIEWS: 3,412
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"Sand, Mountains, Wind, and Water" Sandstone Sculpture >
Sandstone Boulders
This pile of sandstone boulders is an example of rock formed from sandy sediments deposited in an ancient stream channel on a floodplain that existed in the region about 225 million years ago.


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