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Old Faithful geyser erupts at Yellowstone National Park as a young bison grazes nearby. The famous geyser erupts at an average interval of 90 mins, expelling up to 8,400 gallons of boiling water at up to 184 feet high.
Grand Prismatic Spring in Yellowstone National Park in Wyoming, USA
Herds of buffalo or bison grazing in the grasslands of Yellowstone National Park.
Grey (or gray) wolf looking over buffalo (bison) on snow covered hill.  This wolf is a large canine native to Eurasia and North America. The wolf is the largest extant member of the family Canidae, males average 88 lbs. and females average 82 lbs. The grey wolf can be various colors.  The banded fur is usually mottled white, brown, gray, and black. This was near Tower junction in Yellowstone National Park between Gardiner and Cooke City Montana. Larger nearby cities are Bozeman and Billings, Montana. John Morrison Photographer
A herd of American bison grazing by the banks of the Yellowstone River on an Autumn day.
Fly fishing for trout in Wyoming
Old Faithful Yellowstone National Park, Wyoming, USA.
Herd of Bison in the Hayden Valley, Yellowstone National Park.
Herd of Bisons sitting in Yellowstone National Park, Wyoming, USA.
lots of bisons get together on the grassland in Yellowstone National Park
Yellowstone Grand Prismatic Spring. Wyoming. United States.
Hayden Valley in Yellowstone National Park
Bison crossing the Firehole River in Yellowstone National Park
Landscape of geyser basin with smoke and background of pine forest inside hot zone of Yellowstone National Park, Wyoming, USA.
Commonly known as a Buffalo roams Wyoming in herds
Norris Geyser Basin, Yellowstone, Wyoming - United States of America
American Bison (Bos bison, Bison bison) Herd  Grazing in the Rolling Winter Hills of Yellowstone National Park, Wyoming
photos of a wild bison in yellowstone national park, wyoming, usa
Bison or buffalo cows marching through snow in Yellowstone of Wyoming in western USA of North America.
Yellowstone National Park, Park County, Wyoming, United States. American bison in the Lamar Valley.
Yellowstone River view in Yellowstone National Park, Wyoming, USA.
Bison on the range, Hayden Valley, Yellowstone National Park, Wyoming USA
Bison in Yellowstone National Park
Grand Prismatic Hot Spring
American Bison at Lamar Valley in Yellowstone National Park, Wyoming
A Bison and her Calf in Yellowstone National Park
herd, bison, Yellowstone
Bison or buffalo grazing in snow in Yellowstone National Park of Montana, USA
Old Faithful Yellowstone National Park, Wyoming, USA.
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