Wildlife photography of a line of wild bison making their meandering way through deep snow in Yellowstone

The matriarch breaks the way for her small herd of wild bison in the deep snows of a brightly frigid Winter afternoon in Yellowstone National Park. Awarded First Place in the 2015 National Wildlife Photo Contest, deep snow, long shadows and uncontained wildlife deliver a powerful portrait of one of America’s most charismatic animals and iconic landscapes. Yellowstone is home to more than 4,500 genetically pure wild bison and is the only place in the US where bison have lived continuously since prehistoric times.