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Tent illuminated under the night sky, Rocky Mountain National Park, Colorado, United States of America, North America
Mountains and tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Lone Ponderosa pine atop a sandstone formation at first light, Zion National Park, Utah, United States of America, North America
El Capitan, a 3000 feet granite monolith, with the Merced River flowing through Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
Queen Nefertiti rock formation, Arches National Park, Utah, United States of America, North America
Fremont Indian petroglyphs in Capitol Reef National Park, Utah, United States of America, North America
The Spectacles (North and South Windows), Arches National Park, Moab, Utah, United States of America, North America
Snake River at the Schwabacher Landing, Grand Teton National Park, Wyoming, United States of America, North America
Porcelain Springs, Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Lower Falls from Artists Point, Grand Canyon of the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mesa Arch sunrise, Island in the Sky, Canyonlands National Park, Utah, United States of America, North America
South Kaibab Trailhead overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, 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
Badlands, Badlands National Park, South Dakota, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America
Capitol Reef National Park, Utah, United States of America, North America
Natural Bridge, Bryce Canyon National Park, Utah, United States of America, North America
Tourists at Mather Point, early morning, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Slimpod shooting star (Dodecatheon conjugens), Yellowstone National Park, Wyoming, United States of America, North America
Mountain bluebird (Sialia currucoides) with a grub, Yellowstone National Park, Wyoming, United States of America, North America
Last light on Half Dome above Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Two sub-adult grizzly bears (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America
Half Dome and Yosemite Valley from Sentinel Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
El Capitan reflected in the Merced River in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Early morning mist over Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Beaver (Castor canadensis) eating an evergreen branch, Yellowstone National Park, Wyoming, United States of America, North America
Three black bear (Ursus americanus) cubs of the year or spring cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Subway, Zion National Park, Utah, United States of America, North America
The Narrows of the Virgin River in the fall, Zion National Park, Utah, United States of America, North America
El Capitan reflected in a flood pool, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Blue holes and white crystals, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Margerie Glacier, whose face is retreating, in Glacier Bay National Park, Southeast Alaska, United States of America
Canyonlands National Park, Utah, United States of America, North America
Rock formations caused by erosion, with Turret Arch seen through North Window, in the Arches National Park, Utah, USA
Black bear (Ursus americanus), outside Glacier National Park, Montana, United States of America, North America
Autumn tundra landscape, Broad Pass, Denali National Park, Alaska, USA
Tourists in North Window, Arches National Park, Utah, USA, North America
Golden cottonwood trees on banks of the Virgin River, Zion National Park, Utah, United States of America (U.S.A.), North America
Lembert Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Pines at Mystic Falls, near Biscuit 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
Crested Pool, 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
El Capitan and Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
American Robin (Turdus migratorius), Yellowstone National Park, Wyoming, United States of America, North America
Mountain Bluebird (Sialia currucoides) male, Yellowstone National Park, Wyoming, United States of America, North America
Two Bison (Bison bison) bulls sparring, Yellowstone National Park, Wyoming, United States of America, North America
Female Mountain Bluebird (Sialia currucoides) with food at the nest, Yellowstone National Park, Wyoming, United States of America, North America
A sandstone butte in Chaco Culture National Historical Park scenery, New Mexico, United States of America, North America
Pueblo Bonito Chaco Culture National Historical Park scenery, New Mexico, United States of America, North America
Saguaro cacti, Saguaro National Park, Tuscon Mountain District west unit, Tucson, Arizona, United States of America, North America
River otter (Lutra canadensis), Yellowstone National Park, Wyoming, United States of America, North America
The Teton Range at first light after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Red fox (Vulpes vulpes) in the snow, Grand Teton National Park, Wyoming, United States of America, North America
Tree atop a sandstone hill, Zion National Park, Utah, United States of America, North America
Bighorn sheep (Ovis canadensis) ram, Glacier National Park, Montana, United States of America, North America
Joshua Tree National Park, California, United States of America, North America
Hoary marmot (Marmota caligata) eating, Glacier National Park, Montana, United States of America, North America
Couple hiking below Mount Baker, Rocky Mountain National Park, Colorado, United States of America, North America
Tent illuminated under the night sky, Rocky Mountain National Park, Colorado, United States of America, North America
Pine tree growing on a sandstone ledge, Zion National Park, Utah, United States of America, North America
Petroglyphs near Una Vida, Chaco Culture National Historical Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Virgin River, Zion Lodge area, Zion National Park, Utah, United States of America, North America
Thor's Hammer in early morning from Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Buck Canyon Viewpoint, Canyonlands National Park, Utah, United States of America, North America
Hickman Bridge Trail, Navajo Dome, Capitol Reef National Park, Utah, United States of America, North America
Garden of Eden, Arches National Park, Moab, Utah, United States of America, North America
View of Duck Lake and Yellowstone Lake at dusk from near West Thumb, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow with two yearling cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow with a yearling cub, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Canoeing across Bowman Lake, Glacier National Park, Montana, United States of America, North America
Green River Overlook, Canyonlands National Park, Utah, United States of America, North America
Male Williamson's sapsucker (Sphyrapicus thyroideus) poking out of its nest hole, Yellowstone National Park, Wyoming, United States of America, North America
Yosemite Valley beneath pink twilight skies, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America
Teton Range, Grand Teton National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) in a spring snow storm, Yellowstone National Park, Wyoming, United States of America, North America
Horseback riding through Bryce Canyon National Park, Utah, United States of America, North America
Unicorn Peak reflected in Tuolumne Grove seasonal ponds, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Yosemite Valley and Bridalveil Fall from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Yosemite Falls reflected in a flooded Cooks Meadow, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Lamplugh Glacier in Glacier Bay National Park, southeast Alaska, United States of America, North America
Sand dunes, Death Valley National Park, California, USA, North America
Hoodoos, on the Queens Garden Trail, Bryce Canyon National Park, Utah, United States of America, North America
Rocks covered with lichen, Deer Park, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America
Moulton Ranch, Grand Teton National Park, Wyoming, United States of America (U.S.A.), North America
Pink sunset sky above Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Mormon Row barn, Antelope Flats, Grand Teton National Park, 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
Yellowstone River in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Marymere Falls, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America
Carpenters' Hall, Independence National Historical Park, Old City District, Philadelphia, Pennsylvania, 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
Badlands at first light, Badlands National Park, South Dakota, United States of America, North America
The Tetons at dawn after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America
Hikers on the sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bryce Point, Bryce Canyon National Park, Utah, United States of America, North America