POTD July 26, 2013: San Rafael Swell, Emery County, Utah

San Rafael Swell, Emery County, Utah
Photographer: Taylor Boden

Boulders of Cretaceous-age Ferron Sandstone, eroded from the top of a distant butte, have come to rest on the Cretaceous-age Mancos
Shale on the west flank of the San Rafael Swell.