YELLOWSTONE NATIONAL PARK, USA - JULY 19: Bison blocking road on July 19, 2005 in Yellowstone National Park, Wyoming, USA. The Yellowstone Park bison herd is the largest public herd of American bison in USA Stickers #220873996
YELLOWSTONE NATIONAL PARK, USA - JULY 19: Bison blocking road on July 19, 2005 in Yellowstone National Park, Wyoming, USA. The Yellowstone Park bison herd is the largest public herd of American bison in USA Poster #220873996
