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11th Annual Smithsonian Magazine Photo Contest Natural World
A bison stands vigilant on a winter day near Yellowstone's North Entrance.

A bison stands vigilant on a winter day near Yellowstone's North Entrance.

Photo Detail
Date Taken: 02.2013
Date Uploaded: 10.2013
Photo Location: Wyoming, United States of America
Camera: NIKON D300S
Copyright: © Beau Johnston