Western United States
Images made in the western half of the United States including Alaska, but not Hawaii
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The beauty of the Opalescent Pool at Black Sand Basin in Yellowstone National Park exhibits turquoise, copper and blue.
Black Sand BasinNorth AmericaOpalescent PoolU.S.United StatesWyomingYellowstone National Parkcolorcolorful microorganismsdead trees in poolhorizontalnational parknatural wondersrecreationtourismwater2012DennisMook