14th Annual Smithsonian.com Photo Contest
A lone bison crossing the active geyser fields in Yellowstone National Park
Taken in Yellowstone's Norris Geyser Basin, the hottest Geyser Basin in the park where these nomadic bison have been known to asphyxiate from the high levels of hydrogen sulfide in the air.
© Nina Yuan.
All rights reserved.
||Nov. 13, 2016, 1:59 a.m.