POTD December 20, 2013: Abajo Mountains, San Juan County, Utah

Abajo Mountains, San Juan County, Utah
Photographer: Grant Willis

Blocky sandstone ledge deposited in an oasis-like setting between ancient sand dunes forms a resistant cap over beds of the Jurassic-age Navajo Sandstone. Chippean Rocks west of the Abajo Mountains, San Juan County.

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