Jan 12, 2010 – Seaweed covers sandstone formations at low tide below Elephant Rock at Seal Rock State Park, Oregon – Steve Terrill / Corbis
Posted On: January 12, 2010
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Sep 16, 2009 – The Wave, sandstone formation in Coyote Buttes of Vermilion Cliffs Wilderness Area, near Arizona-Utah border – Joseph Sohm
Posted On: September 16, 2009
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