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Grand Prismatic Spring

Yellowstone, Wyoming, USA

 

Shot from about 1200' from a helicopter.

 

Canon 7D, 24-105mm f/4 L @ f/8, 1/500, ISO200, 5184 x 3456, 27.6MB

 

For further information on it see: en.wikipedia.org/wiki/Grand_Prismatic_Spring

(Wiki's photo is terrible ;o)

 

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Taken on August 25, 2010