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Grand Prismatic Spring, Yellowstone National Park (a UNESCO World Heritage Site), Wyoming, August 8, 2010
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Mammoth Hot Springs, Yellowstone National Park (a UNESCO World Heritage Site), Wyoming, August 10, 2010
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Snow over Illinois Bayou arm of Lake Dardanelle, west-central Arkansas, February 4, 2011 (Pentax K-r )
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Spiky vegetation (narrow leaf yucca) in the desert of Petrified Forest National Park, Arizona, October 9, 2011 (Pentax K-r)