180823_030 Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180818_011 Adult female elk (Cervus canadensis) standing in a pine forest clearing in Yellowstone National Park
180818_031 Trees killed by the natural hydrothermal environment of the Fountain Paint Pot area in Yellowstone National Park
180819_237 Buffalo (American Bison) standing in an open meadow of Hayden Valley in Yellowstone National Park, Wyoming
180818_050 Steam rising from a clear blue geyser in the Upper Geyser Basin at Yellowstone National Park
180819_231 American Buffalo (bison) grazing along the Yellowstone River in the Hayden Valley area of Yellowstone National Park, Wyoming
180818_053 Close up of mineral deposits on the perimeter of a geyser in the Upper Geyser Basin at Yellowstone National Park
180818_043 Runoff from geysers and hot springs flows into the Firehole River in the Upper Geyser Basin at Yellowstone National Park
180822_077 Tourists riding horse-drawn stagecoach replicas through sage-covered meadow of Pleasant Valley in Yellowstone National Park, Wyoming
180823_017 Park visitors on observation boardwalk get close up view of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_326 Eruption of Old Faithful cone geyser in Yellowstone National Park
180822_049 View of the Yellowstone River at the bottom of the Grand Canyon of the Yellowstone from Calcite Springs Overlook in Yellowstone National Park, Wyoming
180822_110 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
180822_122 Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180823_010 Park visitors on observation boardwalk get close up view of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_371 Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_079 Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180819_001 Early morning fog rising from the Madison River along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180819_012 Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180823_019 Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180822_124 Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180819_377 Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_007 Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180819_069 Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180819_091 Madison River flowing through pine trees along Hwy 191 near the west gate of Yellowstone National Park in Wyoming
180819_111 Woman fly fishing in the Madison River near the west gate of Yellowstone National Park in Wyoming
180819_137 Logs and tree debris at the bottom of Gibbon Falls on the Gibbon River in Yellowstone National Park, Wyoming
180819_177 Bubbling mudpots in the Artists' Paintpots area of Yellowstone National Park in Wyoming
180819_158 Blood Geyser and hot springs in the Artists' Paintpots area of Yellowstone National Park in Wyoming
180819_170 Visitors on boardwalk through the Geysers and hot springs of the Artists' Paintpots area of Yellowstone National Park in Wyoming
180819_194 Hot spring GAPNN006 in the Artists' Paintpots area of Yellowstone National Park in Wyoming
180819_204 Virginia Cascade on the Gibbon River in a dense pine forested canyon within Yellowstone National Park, Wyoming
180819_281 Three-tiered Kepler Cascades waterfall on the Firehole River in southwest Yellowstone National Park, Wyoming
180819_243 Buffalo (American Bison) standing in an open meadow of Hayden Valley in Yellowstone National Park, Wyoming
180819_278 Rocky shoreline of Yellowstone Lake in Yellowstone National Park, Wyoming
180818_102 Runoff from geysers and hot springs flows into the Firehole River in the Upper Geyser Basin at Yellowstone National Park
180819_349 Observation boardwalk around the Excelsior Geyser Crater in the Midway Geyser basin area of Yellowstone National Park
180819_351 Park visitors walking along the boardwalk through the Midway Geyser basin area of Yellowstone National Park
180819_355 Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_356 Brown layered stratiform mats at the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_369 Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180819_379 Opal Pool hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180822_008 Grand Loop Road - North Loop between Canyon Village and Tower-Roosevelt areas in Yellowstone National Park, Wyoming
180822_099 Hill of calcium carbonate expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180821_328 Adult elk lying in the grass between fallen logs next to the Firehole River in Yellowstone National Park
180822_011 Grand Loop Road - North Loop between Canyon Village and Tower-Roosevelt areas in Yellowstone National Park, Wyoming
180822_055 View of uniform volcanic pillars of basalt along the Yellowstone River from Calcite Springs Overlook in Yellowstone National Park, Wyoming
180822_103 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
180822_165 Boardwalk allows park visitors to get close to the geologic features of Mound Spring the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180823_004 Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180822_221 Terraced pools of hot spring water at Mound Spring in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180823_013 Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
180822_113 Terraced travertine expelled from Palette Spring over time in the Mammoth Hot Springs area of Yellowstone National Park, Wyoming
180823_018 Close up view of the outer perimeter of the Grand Prismatic Spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming
