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Walkway, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Cliff Geyser erupts from geyserite bank on edge of Firehole River through Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Winter landscape, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Regenerating trees reflected in a frosty and misty Lewis River at dawn, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Daisy Geyser, one of the most predictable, erupts at an angle, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Chromatic Pool and surrounds on a clear day, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Turban, Vent and Grand Geysers erupt, Upper 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
Lower Falls, Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison), Hayden Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Morning Glory Pool and surrounds, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cold tourists on seat surrounded by steam, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Dead trees and steam with mountain backdrop and blue skies, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fallen lodgepole pines, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fishing Cone Geyser with freezing mists, Yellowstone Lake at West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Visitors, steam and vivid colours, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Elk herd, 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
Fog mingling with evergreen trees with some cottonwoods, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Porcelain Basin, Norris 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
Bison (Bison bison) cow and calf, 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
Bison (Bison bison) cow and calf in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) bull in a spring snowstorm, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) cow and calf in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) bull in the spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Old Faithful geyser blowing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly Bear (Ursus arctos horribilis), yearling cub, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black Bear (Ursus americanus) sow and yearling cub playing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly Bear (Ursus arctos horribilis), yearling cub, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly Bear (Ursus arctos horribilis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black Bear (Ursus americanus) sow and yearling cub playing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Coyote (Canis latrans) in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bull elk (Cervus canadensis) along the Madison River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Backlit frost-covered cottonwood trees in the winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black Bear (Ursus americanus) sow and chocolate cub-of-the-year, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Lone Star Geyser erupts and creates rainbow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly Bear (Ursus arctos horribilis), 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
Firehole Spring, Firehole Lake Drive, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Devil's Thumb, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North  America
Tourists watching Old Faithful Geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Upper Falls, Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fog mingling with evergreen trees with some cottonwoods, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fog among a hillside with evergreens, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone River and Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Geothermal steam, frosted trees and snow-free hot ground in Norris Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Freezing mists, dawn, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Dead tree trunks, Canary Spring, top Main Terrace, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Castle Geyser erupting, Upper 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
Fog mingling with evergreen trees, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) cow and calf, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone Falls and canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black bear (Ursus americanus) sow and two cinnamon yearling cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Detail of Gibbon Falls, 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
Fumaroles (steam vents) in Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Rainbow cast by eruption of Riverside Geyser, Firehole River, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Sawmill Geyser erupts, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mud Volcano Area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) cows grazing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Pink clouds at dawn in the winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black bear (Ursus americanus) sow and two yearling cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Morning Glory Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Emerald Pool, Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Top of the Lower Falls from Lookout Point at sunrise, Grand Canyon of the Yellowstone, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Eruption of Riverside Geyser seen from Firehole River bridge, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Erupting geyser and Old Faithful Inn, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bright colours and steam, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Line of Bison (Bison bison) crossing the Lamar River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Female Williamson's sapsucker (Sphyrapicus thyroideus), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mammoth Hot Springs, 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
Riverside Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Elevated view of Doublet Pool, Firehole River and Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Eruption of Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) bull in the winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Two bison (Bison bison) calves, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bison (Bison bison) running, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Snow-covered mountain in the winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Geyser erupts and steam blocks the sun, Upper 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
Bull elk (Cervus canadensis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Emerald Spring in Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Sapphire Pool, Biscuit Basin, Upper 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
Yellowstone River in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America