B & T Photography: yellow-bellied marmot, Marmota flaviventris, Rockchuck
B & T Photography: Firehole Spring
B & T Photography: An American Bison exuding steam in the early morning
B & T Photography: elk, Cervus canadensis, wapiti,
B & T Photography: Silex Spring
B & T Photography: Opal Pool,
B & T Photography: Opal Pool,
B & T Photography: Old Faithful erupting
B & T Photography: Grand Prismatic Spring
B & T Photography: violet green swallow, Tachycineta thalassina,violet-green swallow
B & T Photography: Bighorn sheep, Ovis canadensis
B & T Photography: Mammoth Hot Springs
B & T Photography: Mammoth Hot Springs
B & T Photography: Coyote hunting in a flowered Lamar Valley meadow
B & T Photography: blue flag iris, Iris versicolor,
B & T Photography: American Bison, Bison bison
B & T Photography: Bison at sunset in Hayden Valley
B & T Photography: An American Bison exuding steam in the early morning
B & T Photography: Red Fox, Vulpes vulpes,
B & T Photography: Bison at sunset in Hayden Valley
B & T Photography: elk, Cervus canadensis, wapiti,
B & T Photography: Bison herd
B & T Photography: American black bear, Ursus americanus
B & T Photography: Sunset over the Hayden Valley
B & T Photography: A morning mist rises from the Yellowstone River at sunrise
B & T Photography: Old Faithful erupting
B & T Photography: Grand Prismatic Spring
B & T Photography: Anemone Geyser
B & T Photography: Yellowstone Association Institute