“Wall of Bison” by LYLE GLASS.

The front line of a massive bison herd
that were slowly grazing their way to the park road. The herd numbered about 150 - 200 bison.
Adjusted in PSE7.

Photographed in Theodore Roosevelt National Park, South Unit, Medora, North Dakota on 6-21-2012 at 6:09 p.m.