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Low clouds glowing orange at sunrise, Crater Lake National Park, Oregon, United States of America, North America
Copy of The Declaration of Independence in Free Quarker Meeting House, Independence National Historical Park, Philadelphia, Pennsylvania, United States of America, North America
River Otter (Lutra canadensis) pups, 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
North American elk (Cervus Elaphus) and sand dunes, Great Sand Dunes National Park and Preserve, Sangre Cristo Mountains in background, Colorado, United States of America, North America
Sedimentary layers of bluish bentonite clay, The Tepees, Petrified Forest National Park, Arizona, United States of America, North America
Yellow, orange, and red leaves on a big tooth maple (Acer grandidentatum) in the fall, Zion National Park, Utah, United States of America, North America
Isis Temple picks up the first light of the day as the sun rises on the Grand Canyon National Park, UNESCO World Heritage Site, Arizona, 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
The Castle and Highway 24, Capitol Reef National Park, Utah, United States of America, North America
Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America
Salamander, Sequoia National Park, California, United States of America, North America
Loggerhead shrike (Lanius ludovicianus), Pawnee National Grassland, Colorado, United States of America, North America
Badger (Taxidea taxus), Buffalo Gap National Grassland, Conata Basin, South Dakota, United States of America, North America
Old barn dating from approx 1890s, west of Glacier National Park, Montana, United States of America, North America
Cinnamon black bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Merced River in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Smoke from the Dog Rock wildfire in 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
Swift Fox (Vulpes velox) family of a vixen and four kits, Pawnee National Grassland, Colorado, United States of America, North America
American Pika (Ochotona princeps), San Juan National Forest, Colorado, United States of America, North America
Black Bear (Ursus americanus) sow and two chocolate cubs-of-the-year, Yellowstone National Park, 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
Petroglyphs, Near River House Ruins, Ancestral Pueblo, Shash Jaa National Monument, Utah, United States of America, North America
Cunningham Cabin, 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
Praising the sunset over the Pacific Ocean, Rialto Beach, Olympic National Park, Washington State, United States of America (U.S.A.), North America
Mormon Pioneer Wagon, Capitol Reef National Park, Utah, 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
Late afternoon sun lights rocks, Rim Trail near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Upper Falls, Yellowstone River, 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
Black Bear (Ursus americanus) sow and cub, Yellowstone National Park, Wyoming, United States of America, North America
Badger (Taxidea taxus), Yellowstone National Park, Wyoming, United States of America, North America
Young elk (Cervus canadensis), crossing amongst traffic along the Madison River, Yellowstone National Park, Wyoming, United States of America, North America
Old wagons, Fort Union National Monument, New Mexico, United States of America, North America
Open Kiva in West Ruins, Aztec Ruins National Monument, dating from between 850 AD and 1100 AD, UNESCO World Heritage Site, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Small American black bear (Ursus americanus) with cinnamon or blond colouring, digging tree bark for insects, Crescent Meadow trail, Sequoia National Park, Sierra Nevada, California, 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
Mountain goat (Oreamnos americanus), Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America
Yosemite Valley reflected in the Merced River at Valley View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Sunrise in the badlands, Theodore Roosevelt National Park, North Dakota, United States of America, North America
Bull elk (Cervus canadensis) eating pine needles, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) resting, Yellowstone National Park, Wyoming, United States of America, North America
Chapel of the Transfiguration, 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
Swift Fox (Vulpes velox) kit pouncing, Pawnee National Grassland, Colorado, 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
Wolcott Mountain in the fall with yellow and bare aspen, Uncompahgre National Forest, Colorado, United States of America, North America
Black Bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Pueblo Bonito from 1000-1100 AD, Anasazi site, Chaco Canyon National Monument, New Mexico, United States of America (U.S.A.), 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
Landscape, Mount Rainier National Park, Washington state, United States of America, North America
Colorado River, Canyonlands National Park, Utah, United States of America, North America
Double Arch, Arches National Park, Utah, 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
Bryce Canyon National Park, Utah, 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
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, 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
Fort Jefferson, Dry Tortugas National Park, Florida Keys, Florida, United States of America, North America
Copy of The Declaration of Independence in Free Quarker Meeting House, Independence National Historical Park, Philadelphia, Pennsylvania, United States of America, North America
Saguaro cacti and barrel cacti in bloom, Saguaro National Park, Rincon Mountain District, Tucson, Arizona, United States of America, North America
Moose (Alces alces) calf on a winter morning, Grand Teton National Park, Wyoming, United States of America, North America
Sedimentary layers of bluish bentonite clay with petrified wood, Blue Mesa Trail, Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America
Cracks in eroded badlands, Badlands National Park, South Dakota, United States of America, North America
Mirror Lake, 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
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Steamboat Mountain at sunset from Locust Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, 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
White-tailed ptarmigan (Lagopus leucurus) in summer plumage, San Juan National Forest, Colorado, 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), Glacier National Park, Montana, United States of America, North America
Blacktail prairie dog (Cynomys ludovicianus) feeding, 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
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
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
Walking in the Virgin Narrows in Zion National Park, Utah, 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) 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
Adult black-legged kittiwakes (Rissa tridactyla), South Marble Islands, Glacier Bay National Park, Alaska, United States of America, North America
Petroglyphs, Canyon de Chelly National Monument, Arizona, United States of America, North America
Mount Rushmore National Monument, Black Hills, South Dakota, United States of America, North America
Crater Lake and Wizard Island at dawn, Crater Lake National Park, Oregon, 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
Gunnison River deep in the canyon from Kneeling Camel View Point, Black Canyon of the Gunnison National Park, Colorado, United States of America, North America
Fort Sumter National Monument, Charleston, South Carolina, United States of America, North America