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Aerial photo of Grand Canyon from Papillon Helicopter, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Islands in the Sky, Canyonlands National Park, Utah, United States of America, North America
Grizzly bear (Ursus arctos horribilis) eating berries, Glacier National Park, Montana, 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
Badlands with clouds, Theodore Roosevelt National Park, North Dakota, United States of America, North America
Swiftcurrent Lake, Many Glacier Area, Glacier National Park, Montana, United States of America, North America
Firehole Spring, Firehole Lake Drive, 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
Giant redwood (sequioa) trees in Redwood National Park, Northern California, United States of America, North America
Grizzly Bear (Ursus arctos horribilis) sow and two cubs of the year or spring cubs standing, Yellowstone National Park, Wyoming, United States of America, North America
K'alyaan Pole, Tlingit totem pole, rainforest clearing, summer, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
Old Faithful geyser blowing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Oxbow Bend, Snake River and Tetons, Grand Tetons National Park, Wyoming, USA
Bison, Yellowstone National Park, Wyoming, USA
Red-legged frog (Rana aurora), Olympic National Park, Washington state, United States of America, North America
Backpacker crossing bridge, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America
Moss-covered tree trunks in the rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, 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
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists watching Old Faithful Geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Backlit red ridges surrounded by the clouds of an early morning temperature inversion, Bryce Canyon National Park, Utah, United States of America, North America
Sunrise over Crater Lake and Wizard Island, Crater Lake National Park, Oregon, United States of America, North America
Uinta Ground Squirrel (Urocitellus armatus) among Mountain Bluebell (Mertensia ciliata), Yellowstone National Park, Wyoming, 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
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, Fajada Butte, UNESCO World Heritage Site, New Mexico, 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
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
Yellow-headed blackbird (Xanthocephalus xanthocephalus), Yellowstone National Park, Wyoming, United States of America, North America
Water reflections of the Teton Range, taken from the end of Schwabacker Road, Grand Teton National Park, Wyoming, United States of America, North America
Water reflection of the Teton Range, taken from the end Schwabacher Road, Grand Teton National Park, Wyoming, United States of America, North America
Fog among a hillside with evergreens, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Aura Borealis (Northern lights) in Denali Wilderness National Park, Alaska, United States of America, North America
Walking in the Virgin Narrows in Zion National Park, Utah, United States of America, North America
Sunset at Cape Royal, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Yellowstone River and Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Organ (right) and the Tower of Babel (left), Arches National Park, Utah, USA
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
Lone Star Geyser erupts and creates rainbow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Fort Jefferson, Dry Tortugas National Park, Florida Keys, Florida, 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
Cinnamon Black Bear (Ursus americanus) yearling cub, Yellowstone National Park, Wyoming, United States of America, North America
Pool in slick rock at dawn, 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
Mesa Verde National Park, Fire Temple, 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
Salamander, Sequoia National Park, California, United States of America, North America
Bull elk (Cervus canadensis) eating pine needles, Yellowstone National Park, Wyoming, United States of America, North America
Cinnamon black bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Bison (Bison bison), Yellowstone National Park, Wyoming, 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
Bison (Bison bison) bull covered with snow in snowfall in the winter, Yellowstone National Park, Wyoming, 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
Cunningham Cabin, Grand Teton National Park, Wyoming, United States of America, 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
Lake Quinault, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), 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
Colorado River, Canyonlands 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
Castle Geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
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
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
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
Mesa Verde National Park, Cliff Palace, UNESCO World Heritage Site, Colorado, United States of America, North America
Mesa Verde National Park, Spruce Tree House, UNESCO World Heritage Site, Colorado, United States of America, North America
Photographer shooting the valley floor from Angel's Landing Trail in Zion National Park, Utah, United States of America, North America
Box elder (boxelder maple) (maple ash) (Acer negundo) with yellow leaves in the fall, Zion National Park, Utah, United States of America, North America
The Castle and Highway 24, Capitol Reef National Park, Utah, United States of America, North America
Blacktail prairie dog (Cynomys ludovicianus) feeding, Theodore Roosevelt National Park, North Dakota, United States of America, North America
Fog mingling with evergreen trees with some cottonwoods, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Old barn dating from approx 1890s, west of Glacier National Park, Montana, United States of America, North America
Chapel of the Transfiguration, Grand Teton National Park, Wyoming, United States of America, North America
Bison (Bison bison) cow and calf, Yellowstone National Park, UNESCO World Heritage Site, 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
Tenaya Lake in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Black Bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America
Traffic on Trans Canada Highway 1, Canadian Rockies, Banff National Park, UNESCO World Heritage Site, Alberta, Canada, North America
The Fairweather Range reflected in calm water, Fern Harbour, Glacier Bay National Park, Alaska, United States of America
Hiking the Pa'rus trail, Zion National Park, Utah, United States of America, North America
Sand dunes at Stovepipe Wells, Death Valley National Park, California, USA, North America
Crater Lake National Park, Oregon, USA
Landscape, Mount Rainier National Park, Washington state, United States of America, North America
Double Arch, Arches National Park, Utah, United States of America, North America
Mormon Pioneer Wagon, Capitol Reef National Park, Utah, 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
Upper Falls, Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Shi Shi Beach, Olympic National Park, UNESCO World Heritage Site, Washington State, 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
Red Fox (Vulpes vulpes) (Vulpes fulva) vixen and two kits, 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 break with Mount Foraker on the left and Mount Crosson on the right, in distance, Denali National Park, Alaska, 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
Big horn sheep, Glacier National Park, Montana, United States of America, North America
Bare tree among boulders at sunrise, Joshua Tree National Park, California, United States of America, North America
Mesa Verde National Park, Fire Temple, UNESCO World Heritage Site, Colorado, United States of America, North America