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Sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Tenaya Lake on the Tioga Pass, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Five Faces Pictograph, Anthropomorph images 700 to 1000 years old, Davis Canyon, Canyonlands National Park, Utah, United States of America, North America
Tree atop a sandstone hill, Zion National Park, Utah, United States of America, North America
The Teton Range at dawn after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America
Pools in slick rock at dawn, Zion National Park, Utah, United States of America, North America
View of Grand Canyon west of the historic Watch Tower, managed by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America
The arch at White Tank Campground, Joshua Tree National Park, California, 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
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
Rock formations, The Needles, Canyonlands National Park, Utah, United States of America, North America
Sunrise at Mather Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
A twisted very old Bristlecone Pine (Pinus longaeva), on sage brush covered slopes of dolomite limestone, in the Ancient Bristlecone Pine Forest Park, Inyo National Forest, Bishop, California, United States of America, North America
Red rock cliffs and badlands, 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
Mound Terrace, Mammoth Hot Springs, 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
Afternoon thunderstorm, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Natural Bridge, Bryce Canyon National Park, Utah, United States of America, North America
Bison (Bison bison) cows sparring, Yellowstone National Park, Wyoming, United States of America, North America
Western meadowlark (Sturnella neglecta) singing, Yellowstone National Park, Wyoming, United States of America, North America
Half Dome and Clouds Rest mountains from Olmsted Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Female Williamson's sapsucker (Sphyrapicus thyroideus) on a feeding tree, Yellowstone National Park, Wyoming, United States of America, North America
Fog among the mountains and evergreens, Yellowstone National Park, UNESCO World Heritage Site, 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
Duck Lake in Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Elk (Cervus canadensis) near Lake Village, Yellowstone National Park, Wyoming, United States of America, North America
Firehole Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Two Grizzly Bear (Ursus arctos horribilis) cubs of the year or spring cubs playing, Yellowstone National Park, Wyoming, United States of America, North America
Marjorie Glacier in Glacier Bay National Park, Alaska, 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
Detail of a totem pole on display at Sitka National Historical Park in Sitka, Baranof Island, Southeast Alaska, United States of America
Painted Desert, Death Valley National Park, California, United States of America, North America
Zabriskie Point in Death Valley National Park, California, United States of America, North America
Sandy beach, Fort Jefferson, Dry Tortugas National Park, Florida, United States of America, North America
Castle Geyser, Yellowstone National Park, Wyoming, USA
Mount Moroni and the Virgin River in autumn, Zion National Park, Utah, USA
Oxbow bend, Snake River and Tetons, Grand Tetons National park, Wyoming, USA
Jagged sandstone cliffs above the Virgin River, Zion National Park, Utah, USA
Bison (Bison bison), Yellowstone National Park, Wyoming, United States of America, North America
Shores of the Virgin River and winter trees, Pa'rus Trail, Zion National Park, Utah, United States of America, North America
Moulton Ranch, Grand Teton National Park, Wyoming, United States of America (U.S.A.), North America
Balanced Rock at dusk, Arches National Park, Utah, United States of America, North America
Beauty Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Ice encrusted dead trees against clear skies, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Man looking at Mount Rainier from trail, Mount Rainier National Park, Washington State, United States of America, North America
Everglades National Park, UNESCO World Heritage Site, Florida, United States of America, North America
Carpenters' Hall, Independence National Historical Park, Old City District, Philadelphia, Pennsylvania, United States of America, North America
Red Fox (Vulpes vulpes) (Vulpes fulva), Yellowstone National Park, Wyoming, United States of America, North America
Red squirrel (spruce squirrel) (Tamiasciurus hudsonicus), Denali National Park and Preserve, Alaska, United States of America
Young beaver (Castor canadensis) swimming, Denali National Park and Preserve, Alaska, United States of America, North America
Alaska Range, Denali National Park and Preserve, Alaska, United States of America, North America
Bighorn Sheep (Ovis canadensis) ram feeding, Yellowstone National Park, Wyoming, United States of America, North America
Bison (Bison bison) bull in the snow, Yellowstone National Park, Wyoming, United States of America, North America
Sand dunes in the Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Bryce Point, Bryce Canyon National Park, Utah, United States of America, North America
Red fox (Vulpes vulpes) in the snow, Grand Teton National Park, Wyoming, United States of America, North America
Bull elk (Cervus canadensis) at sunset in the winter, Yellowstone National Park, Wyoming, United States of America, North America
Wild buffalos in the Roosevelt National Park, North Dakota, United States of America, North America
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Northern (Steller) sea lions (Eumetopias jubatus), South Marble Island, Glacier Bay National Park, Southeastern Alaska, United States of America, North America
Sunrise over El Capitan and Yosemite Valley from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Juniper and boulder, Joshua Tree National Park, California, United States of America, North America
Majestic view of Yosemite Valley from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Aspen trees in autumn below Longs Peak, a mountain above 14000 feet, known as a 14er, Rocky Mountain National Park, Colorado, United States of America, North America
Pool in slick rock at dawn, Zion National Park, Utah, United States of America, North America
Aerial photo of Colorado River and the Grand Canyon from Papillon Helicopter, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, 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
Virgin River, Zion Lodge area, Zion 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
Snake River at the Schwabacher Landing, Grand Teton National Park, Wyoming, United States of America, North America
Snake River at the Schwabacher Landing, Grand Teton National Park, 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
View of Lower Falls from Red Rock Point, Grand Canyon of the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Liberty Cap, a dormant hot spring cone, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, 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
Pipe Creek Vista Point Overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Male dusky grouse (blue grouse) (Dendragapus obscurus) displaying, Yellowstone National Park, Wyoming, United States of America, North America
Mount Grinnell and Swiftcurrent Lake at dawn, Glacier National Park, Montana, United States of America, North America
Elk in Yellowstone National Park, Wyoming, United States of America, North America
Capitol Reef National Park, Utah, United States of America, North America
Hoodoos, on the Queens Garden Trail, Bryce Canyon National Park, Utah, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, Wyoming, United States of America, North America
Uinta ground squirrel (Urocitellus armatus), Yellowstone National Park, Wyoming, 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
The Three Brothers reflected in the Merced River in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Coyote (Canis latrans) on the snow in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Pronghorn (Antilocapra americana) bucks sparring, Yellowstone National Park, Wyoming, United States of America, North America
Lower Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone River near Calcite Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Marjorie Glacier in Glacier Bay National Park, Alaska, 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
Fresh snow on evergreens, 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