Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Adult female elk (Cervus canadensis) standing in a pine forest clearing in Yellowstone National Park
Trees killed by the natural hydrothermal environment of the Fountain Paint Pot area in Yellowstone National Park
Buffalo (American Bison) standing in an open meadow of Hayden Valley in Yellowstone National Park, Wyoming
Steam rising from a clear blue geyser in the Upper Geyser Basin at Yellowstone National Park
American Buffalo (bison) grazing along the Yellowstone River in the Hayden Valley area of Yellowstone National Park, Wyoming
Close up of mineral deposits on the perimeter of a geyser in the Upper Geyser Basin at Yellowstone National Park
Tourists riding horse-drawn stagecoach replicas through sage-covered meadow of Pleasant Valley in Yellowstone National Park, Wyoming
Runoff from geysers and hot springs flows into the Firehole River in the Upper Geyser Basin at Yellowstone National Park
Runoff from geysers and hot springs flows into the Firehole River in the Upper Geyser Basin at Yellowstone National Park
View of the Yellowstone River at the bottom of the Grand Canyon of the Yellowstone from Calcite Springs Overlook in Yellowstone National Park, Wyoming
Dead trees on a hill of calcium carbonate expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Eruption of Old Faithful cone geyser in Yellowstone National Park
Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Early morning fog rising from the Madison River along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Park visitors on observation boardwalk get close up view of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Bubbling mudpots in the Artists' Paintpots area of Yellowstone National Park in Wyoming
Hot spring GAPNN006 in the Artists' Paintpots area of Yellowstone National Park in Wyoming
Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Woman fly fishing in the Madison River near the west gate of Yellowstone National Park in Wyoming
Park visitors on observation boardwalk get close up view of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Logs and tree debris at the bottom of Gibbon Falls on the Gibbon River in Yellowstone National Park, Wyoming
Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
Buffalo (American Bison) standing in an open meadow of Hayden Valley in Yellowstone National Park, Wyoming
Blood Geyser and hot springs in the Artists' Paintpots area of Yellowstone National Park in Wyoming
Rocky shoreline of Yellowstone Lake in Yellowstone National Park, Wyoming
Visitors on boardwalk through the Geysers and hot springs of the Artists' Paintpots area of Yellowstone National Park in Wyoming
Virginia Cascade on the Gibbon River in a dense pine forested canyon within Yellowstone National Park, Wyoming
Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Three-tiered Kepler Cascades waterfall on the Firehole River in southwest Yellowstone National Park, Wyoming
Observation boardwalk around the Excelsior Geyser Crater in the Midway Geyser basin area of Yellowstone National Park
Park visitors walking along the boardwalk through the Midway Geyser basin area of Yellowstone National Park
Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Hill of calcium carbonate expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Dead trees on a hill of calcium carbonate expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Opal Pool hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Adult elk lying in the grass between fallen logs next to the Firehole River in Yellowstone National Park
Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Grand Loop Road - North Loop between Canyon Village and Tower-Roosevelt areas in Yellowstone National Park, Wyoming
Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Grand Loop Road - North Loop between Canyon Village and Tower-Roosevelt areas in Yellowstone National Park, Wyoming
View of uniform volcanic pillars of basalt along the Yellowstone River from Calcite Springs Overlook in Yellowstone National Park, Wyoming
Boardwalk allows park visitors to get close to the geologic features of Mound Spring the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Terraced pools of hot spring water at Mound Spring in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
Log jam on the Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
