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Adult black-legged kittiwakes (Rissa tridactyla), South Marble Islands, Glacier Bay National Park, Alaska, United States of America, North America
Mesa Arch at sunrise, Canyonlands National Park, Utah, United States of America (U.S.A.), North America
Valley View with El Capitan, Yosemite National Park, UNESCO World Heritage Site, California, 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
Sawmill Geyser erupts, Upper 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
Sunset at Crater Lake with Wizard Island, Crater Lake National Park, Oregon, United States of America, North America
Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America
Badger (Taxidea taxus), Yellowstone National Park, Wyoming, United States of America, North America
Morning mist rises in Badlands National Park, South Dakota, United States of America, North America
Red fox (Vulpes vulpes) in the snow, Grand Teton National Park, Wyoming, 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
Big horn sheep, Glacier National Park, Montana, United States of America, North America
Red leaves on a big tooth maple branch in the fall, Zion National Park, Utah, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Fajada Butte, UNESCO World Heritage Site, New Mexico, United States of America, North America
Mount Hayden at dusk from Point Imperial, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bighorn sheep (Ovis canadensis) lamb, Yellowstone National Park, Wyoming, United States of America, North America
Columbian ground squirrel (Citellus columbianus) feeding, Glacier National Park, Montana, United States of America, North America
Grizzly bear (Ursus arctos horribilis) in the rain, Glacier National Park, Montana, United States of America, North America
River Otter (Lutra canadensis) on frozen Yellowstone Lake, Yellowstone National Park, Wyoming, United States of America, North America
Rock formations, Chesler Park, The Needles district, Canyonlands National Park, Utah, United States of America, North America
Coyote (Canis latrans) in the snow, 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
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
Half Dome at sunset, the mountain partially obscurred by smoke from the 2014 Dog Rock wildfire, 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
Sunrise View Piont, Bryce National Park, Utah, United States of America, North America
Natural bridge, Bryce National Park, Utah, United States of America, North America
Sandstone formations, Bryce Canyon, Bryce Canyon National Park, Utah, United States of America, North America
Elk, Yellowstone National Park, Wyoming, USA
Valley of Ten Thousand Smokes with ignimbrite of 1912 eruption, Griggs volcano behind, Katmai National Park, Alaska, USA, 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
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Capitol Reef National Park, Utah, United States of America, North America
Black bear (Ursus americanus) sow, Yellowstone National Park, Wyoming, United States of America, North America
A stone brick museum is dwarfed by giant sequoia trees at Mariposa Grove after fresh snowfall, Yosemite National Park, UNESCO World Heritage Site, California, 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
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
Theodore Roosevelt National Park North Unit, Watford, North Dakota, 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
Male Mountain Bluebird (Sialia currucoides) with food at the nest, Yellowstone National Park, Wyoming, United States of America, North America
Female Barrow's Goldeneye (Bucephala islandica), Yellowstone National Park, Wyoming, United States of America, North America
View over valley with colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America
Delicate Arch in late afternoon, Arches National Park, Utah, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow and two cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) cub of the year or spring cub in a tree, Yellowstone National Park, Wyoming, United States of America, North America
Bighorn sheep (Ovis canadensis) ram eating in the winter, Yellowstone National Park, Wyoming, United States of America, North America
The northern part of the Roosevelt National Park, North Dakota, United States of America, North America
River bend in the Roosevelt National Park, North Dakota, United States of America, North America
Half Dome from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, 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
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Mountain goat (Oreamnos americanus) nanny and kid, Glacier National Park, Montana, United States of America, North America
The Grandstand in Racetrack Valley, a dried lake bed known for its sliding rocks on the Racetrack Playa, Death Valley National Park, California, 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
Two girls with parasols in Burnt Forest, Yellowstone National Park, Wyoming, United States of America, North America
Vintage tour bus on the Sun Road, Glacier National Park, Montana, United States of America, North America
Bryce Canyon National Park Utah, United States of America, North America
South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris) with nesting material, Yellowstone National Park, 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
Last light on Half Dome, photographed from Olmsted Point, Yosemite National Park, UNESCO World Heritage Site, California, 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
Two Black Bear (Ursus americanus) cubs of the year or spring cubs playing, Yellowstone National Park, Wyoming, United States of America, North America
Fresh snow on evergreens, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Enjoying the view from Angels Landing, Zion National Park, Utah, United States of America, North America
Taking a photo of Canyon overlook, Zion National Park, Utah, United States of America, North America
Delicate Arch, Arches National Park, Moab, Utah, United States of America, North America
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA
Time exposure at night, Joshua Tree National Park, California, United States of America (U.S.A.), North America
Figure shows scale of the trunk of giant sequoia tree in the Giant Forest, Sequoia National Park, California, United States of America (U.S.A.), 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
Colorado River, Canyonlands National Park, Utah, United States of America, North America
Moss-covered tree trunks in the rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Highway 190 through Death Valley National Park, California, United States of America, North America
Moose (Alces alces) cow in pond breaks from filter feeding and stares at camera, Grand Teton National Park, 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
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black Canyon of the Gunnison National Park, Gunnison River deep in the canyon, Colorado, United States of America, North America
Alpine Shooting Star (Dodecatheon alpinum), Yellowstone National Park, Wyoming, United States of America, North America
Saguaro cactus, Saguaro National Park, Tuscon Mountain District west unit, Tucson, Arizona, 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
Mountain bluebird (Sialia currucoides) pair at their nest, Yellowstone National Park, Wyoming, United States of America, North America
Bull elk (Cervus canadensis) feeding in the winter, Yellowstone National Park, Wyoming, United States of America, North America
Bryce Canyon, Bryce Canyon National Park, Utah, 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
Scree field on the side of a sandstone butte, Capitol Reef National Park, Utah, United States of America, North America
Half Dome from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, 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
Black bear (Ursus americanus) cub of the year or spring cub climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Tourist hiker, on top of Moro Rock overlooking the Sequoia foothills, looking towards Kings Canyon and the high mountains of the Sierra Nevada, Sequoia National Park, California, United States of America, North America
Juniper in the badlands, Capitol Reef National Park, Utah, United States of America, North America
Checkerboard Mesa, formed of Navajo sandstone, Zion National Park, Utah, United States of America, North America