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Mesa Verde National Park, Spruce Tree House, UNESCO World Heritage Site, Colorado, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow and three cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
Pool in slick rock reflecting first light on a sandstone hill, Zion National Park, Utah, United States of America, North America
Yellow pine chipmunk (Eutamias amoenus) eating sagebrush leaves, Yellowstone National Park, Wyoming, United States of America, North America
View from Cadillac Mountain, Acadia National Park, Mount Desert Island, Maine, New England, 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
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America
Sunrise in the badlands, Theodore Roosevelt National Park, North Dakota, United States of America, North America
Blacktail prairie dog (Cynomys ludovicianus), Theodore Roosevelt National Park, North Dakota, United States of America, North America
Male yellow-headed blackbird (Xanthocephalus xanthocephalus) dislaying, Yellowstone National Park, 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
Grizzly bear (Ursus arctos horribilis) resting, Yellowstone National Park, Wyoming, United States of America, North America
Teton Range, Grand Teton National Park, Wyoming, United States of America, North America
Unicorn and Cathedral Peaks reflected in the Tuolumne River, Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Twilight at Tioga Lake, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Giant Sequoia (Sequoiadendron giganteum) in a sunlit woodland, Mariposa Grove, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Flooded Cook's Meadow beneath Yosemite Falls, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, 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 tarmac road, Death Valley National Park, California, United States of America, North America
Yellowstone Falls and canyon, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
River Tuolumne adjacent to Yosemite National Park, California, United States of America, North America
Black Bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
T. A. Moulton Barn, Mormon Row, Grand Teton National Park, Wyoming, United States of America, North America
Tetons and Jenny Lake, Grand Teton National Park, Wyoming, USA
Sunset over a warm river in winter, Yellowstone National Park, Wyoming, USA
Acadia national park coastline, Maine, New England, USA, North America
Elk, Yellowstone National Park, Wyoming, USA
Freezing mists, dawn, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cinnamon black bear (Ursus americanus) hangs on a chokeberry branch in autumn (fall), Grand Teton National Park, 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
Morning Glory Pool, 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
The Moulton Barn on Mormon Row with the Grand Tetons range in background, Antelope Flats Road, Grand Teton National Park, Wyoming, United States of America, North America
Sunset at Crater Lake with Wizard Island, Crater Lake National Park, Oregon, United States of America, North America
Bison (Bison bison) cow and calf, Yellowstone National Park, Wyoming, United States of America, North America
Cracks in eroded badlands, Badlands National Park, South Dakota, United States of America, North America
Red leaves on a big tooth maple (Acer grandidentatum) in the fall, Zion National Park, Utah, United States of America, North America
Mesa Verde National Park, Cliff Palace, UNESCO World Heritage Site, Colorado, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Sunset above Yosemite Valley and Half Dome, viewed from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow and yearling cub, Glacier National Park, Montana, United States of America, North America
Hoodoos, on the Queens Garden Trail, Bryce Canyon National Park, Utah, United States of America, North America
Bull elk (Cervus canadensis) in velvet running, Yellowstone National Park, Wyoming, United States of America, North America
Yosemite Valley choked with smoke from the Dog Rock Wildfire, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
The Three Brothers mountains reflected in the tranquil waters of the River Merced, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Sunset above Half Dome, viewed from Olmsted Point, in autumn, Yosemite National Park, UNESCO World Heritage Site, California, 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
Bison (Bison bison) calf, Yellowstone National Park, 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
View of Giant Sequoias tree in Tuolumne Grove Trail, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Adult black-legged kittiwakes (Rissa tridactyla), South Marble Islands, Glacier Bay National Park, Alaska, United States of America, North America
Hiking the Angel's Landing Trail in Zion National Park, Utah, United States of America, North America
Shafer Trail Road, Canyonlands National Park, Utah, United States of America, North America
Crater Lake and Wizard Island at dawn, Crater Lake National Park, Oregon, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black Bear (Ursus americanus) cub of the year climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, Wyoming, United States of America, North America
Hikers descend the curving South Kaibab trail in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Looking down onto the inner canyon and Colorado River from Mohave Point as it flows through the Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Mesa Verde National Park, Spruce Tree House, UNESCO World Heritage Site, Colorado, United States of America, North America
Cinnamon black bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Sunset at Locust Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Lone hiker near Yavapai Point Overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand View Point overlook and juniper tree, Island in the Sky, Canyonlands National Park, Utah, 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
Two girls with parasols in Burnt Forest, Yellowstone National Park, Wyoming, United States of America, North America
Watch Tower, Colorado River below, Desert View Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bison (Bison bison) bull covered with snow in the winter, Yellowstone National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) sow and three cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
Mist surrounding the forest below Unicorn Peak in autumn, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
El Capitan and Bridalveil Falls frame Half Dome and Clouds Rest, Yosemite Valley from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
American Kestrel (Sparrow Hawk) (Falco sparverius), male, Yellowstone National Park, Wyoming, United States of America, North America
Mount Moran in the winter with snow, Grand Teton National Park, Wyoming, United States of America, North America
John Moulton Barn, Mormon Row, Grand Teton National Park, Wyoming, United States of America, North America
Hiking the Pa'rus trail, Zion National Park, Utah, United States of America, North America
Bison (Bison bison), Theodore Roosevelt National Park, North Dakota, United States of America, North America
View from Schwabacher's Landing across the Snake River to the Teton Range, Grand Teton National Park, Wyoming, United States of America, North America
Wall of Windows lit by early morning sun, silhouetted rock, Peekaboo Loop Trail, Bryce Canyon National Park, Utah, 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
Lenticular clouds over Moose Pond, autumn, Grand Teton National Park, Wyoming, United States of America, North America
Slump Block area in Theodore Roosevelt National Park North Unit, Watford, North Dakota, United States of America, North America
Cinnamon Black Bear (Ursus americanus) yearling cub climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Woman hiking near Mount Olympus and Blue Glacier, Olympic National Park, UNESCO World Heritage Site, Washington State, 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
Red Fox (Vulpes vulpes) (Vulpes fulva) in the snow, Grand Teton National Park, Wyoming, United States of America, North America
Female mountain bluebird (Sialia currucoides) with an insect, Yellowstone National Park, Wyoming, United States of America, North America
Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America
Tourists at Mather Point overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grizzly bear (Ursus arctos horribilis) in the rain, Glacier National Park, Montana, United States of America, North America
South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Dusky grouse (blue grouse) (Dendragapus obscurus) hen, Glacier National Park, Montana, United States of America, North America
Blacktail prairie dog (Cynomys ludovicianus), Theodore Roosevelt National Park, North Dakota, United States of America, North America
Lake Helen and Mount Lassen, 3187 meters, in the background, Lassen Volcanic National Park, California, United States of America, North America
Golden evening sunshine illuminates El Capitan and Half Dome in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Tenaya Lake in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Granite domes of Yosemite reflected in the calm waters of Tenaya Lake, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Dead evergreen tree and sandstone mounds, Zion National Park, Utah, United States of America, North America