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Photograph - Digital Capture, Watermark Not On Actual Print
Vishnu Schist, Grand Canyon National Park. This is the bottommost and oldest layer of rock exposed in the canyon, around 2 billion years old and thus close to half as old as this planet itself!
June 16th, 2012
Viewed 290 Times - Last Visitor from Beverly Hills, CA on 12/22/2014 at 12:12 PM
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