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Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Pool runoff of orange bacteria and algae (Therophiles), Grand Prismatic Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on boardwalk in silhouette, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourist taking a photograph of Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Turquoise Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Excelsior Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Excelsior Geyser Crater, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on boardwalk over the mineral runoff from Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on boardwalk over the mineral runoff from Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on the boardwalk around the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring and Excelsior Pool behind, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Opal Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Dead tree trunks in hot spring area of the Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring and bacterial mats, Midway Geyser Basin, Yellowstone National Park, Teton County, Wyoming, United States of America, North America
Grand Prismatic Spring with a view towards Twin Buttes, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring and bacterial mats, Midway Geyser Basin, Yellowstone National Park, Teton County, Wyoming, United States of America, North America
Dead lodgepole pine trunks, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Midway Geyser Basin thermal activity from the Fairy Creek Trail, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Steam from Imperial and Spray Geysers through regenerating forest, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring and bacterial mats, Midway Geyser Basin, Yellowstone National Park, Teton County, Wyoming, United States of America, North America
Grand Prismatic Spring reflections with Twin Buttes, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fallen lodgepole pines, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Midway Geyser Basin thermal activity from the Fairy Creek Trail, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Colourful Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Winter in Midway basin, buffalo beside Firehole river, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Steam from hot springs and snow-free hot ground in Midway Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Buffalo beside Firehole River in winter in Midway geothermal basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Snow covered spruce, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, America
Mineral deposits at a hot spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Tourists on boardwalk, Grand Prismatic Spring, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Tourists on boardwalk, steaming geothermal springs, geysers, Midway Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, United States, North America
Wave structure, coloured mineral deposits at the edge of the hot steaming spring, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Colored mineral deposits at the edge sr steaming hot spring, detail photo, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Steaming hot spring with sun star, Colored mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Tourists on a jetty in the thermal area, steaming hot spring, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Tourists on boardwalk, Grand Prismatic Spring, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Steaming hot spring with colored mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Runoff from Excelsior Geyser into Firehole River, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, geysers, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Steaming hot spring with colored mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Steaming hot spring with sun star, Colored mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Steaming hot spring with colored mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Two tourists on a jetty in the thermal area, hot spring, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Shield Grand Prismatic Spring in front of yellow mineral deposits, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Visitors on footbridge over steaming hot spring with coloured mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Turquoise Pool, Midway Geyser Basin, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Petrified tree, runoff area of the Grand Prismatic Spring, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Outlet of the Excelsior Geyser in Firehole River, Midway Geyser Basin, colourful thermophilic bacteria, microorganisms, geysers, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
Steaming geothermal springs and geysers, Firehole River, Midway Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, United States, North America
Visitors on footbridge over steaming hot spring with coloured mineral deposits, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America
People on a cordwood bridgeway at the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Runoff from Excelsior Geyser into Firehole River, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, geysers, hot springs, Yellowstone National Park, Wyoming, United States of America, USA
Tourists on the boardwalk along the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, Idaho, Montana, America, United States
Grand Prismatic Spring Geyser, Yellowstone National Park.
Firehole River in Yellowstone. Waterfalls of hot water.
Excelsior Geyser Crater near Grand Prismatic Spring, Yellowstone National Park.
Turquoise Spring located in Midway Geyser Basin in Yellowstone National Park, Wyoming.
Aerial of Grand Prismatic Springs, Yellowstone National Park, WY
Scenic view of Midway Geyser Basin with tourists in the distance, Yellowstone National Park, Wyoming, USA
Scenic view of Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Midway Geyser Basin Grand Prismatic Spring, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming
Midway Geyser Basin, Grand Prismatic Spring, Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming
Opal Pool in Midway Geyser Basin, Yellowstone National Park, Wyoming
Colorful bacteria mat surrounding Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming
Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming