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Glacier lily (dogtooth violet) (Erythronium grandiflorum), Glacier National Park, Montana, United States of America, North America

The view to the southeast from Point Sublime after sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Alpine bearberry (Arctostaphylos alpina) in fall color on the tundra, Denali National Park, Alaska, United States of America, North America

Morning Glory Pool, a geothermal pool, colours are due to algae at temperature bands, hotter below, Yellowstone National Park, Wyoming, USA

Coyote (Canis latrans), weighing 30-40 lbs, less than half the weight of a wolf, Yellowstone National Park, Wyoming, USA

Juvenile alligator in swampland (bayou) at Jean Lafitte National Historical Park and Preserve, south of New Orleans, Louisiana, USA

Cliff Geyser erupts from geyserite bank on edge of Firehole River through Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Visitor looking over rugged landscape from the Badlands Loop Road near Panorama Point, Badlands National Park, South Dakota, United States of America, North America

View across Nymph Lake at sunrise, with Hallett Peak above the trees, Rocky Mountain National Park, Colorado, United States of America, North America

Lake Quinault, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Father and son hike to Anderson Pass, Enchanted Valley, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Grass and maple trees in temperate rain forest, Queets River, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Winter landscape, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Close-up of the leaves of a vine maple (Acer circinatum), Mount Rainier National Park, Washington state, United States of America, North America

Landscape with wild flowers, Mount Rainier National Park, Washington state, United States of America, North America

Rock Art, Fremont style anthropomorphs dating from AD 500 to 1300, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Fruita Schoolhouse dating from 1896, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Layered sandstone formation, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Layered sandstone formation, Capitol Reef National Park, Utah, United States of America, North America

Regenerating trees reflected in a frosty and misty Lewis River at dawn, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Daisy Geyser, one of the most predictable, erupts at an angle, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Tourists on boardwalk in silhouette, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Mormon Row barn on a clear Autumn (Fall) morning, Antelope Flats, Grand Teton National Park, Wyoming, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Pictograph Panel, Horseshoe Shelter Site, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Pictograph Panel, Horseshoe Shelter Site, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Backpackers in steamy light, Queets Vall, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Crater Lake and Wizard Island at dawn, Crater Lake National Park, Oregon, United States of America, North America

Douglas's Squirrel (Tamiasciurus hudsonicus) eating a pine cone, Olympic National Park, Washington State, United States of America, North America

Pa'rus Trail winds through Zion Canyon in winter, Zion National Park, Utah, United States of America, North America

Hoodoos lit by late afternoon sun with distant view in winter, Paria View, Bryce Canyon National Park, Utah, United States of America, North America

Hoodoos strongly lit by early morning sun with heavy cloud, Peekaboo Loop Trail in winter, Bryce Canyon National Park, Utah, United States of America, North America

Cliffs and hoodoos lit by late afternoon sun with distant view in winter, Paria View, Bryce Canyon National Park, Utah, United States of America, North America

Distant view with cloud layers from elevated position on Peekaboo Loop Trail in winter, Bryce Canyon National Park, Utah, United States of America, North America

Rim cliffs and hoodoos lit by late afternoon sun with distant view in winter, Paria View, Bryce Canyon National Park, Utah, United States of America, North America

Hoodoos with snow, lit by late afternoon sun, from Rim Trail near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America

Late afternoon sun lights hoodoos and rocks through a cloudy sky in winter, Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America

Large hoodoo in early morning light seen from a horse trail in winter, Bryce Canyon National Park, Utah, United States of America, North America

Late afternoon sun lights many hoodoos in winter, Rim Trail near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America

Hiker in front of Wall of Windows lit by early morning sun, icy Peekaboo Loop Trail, Bryce Canyon National Park, Utah, United States of America, North America

Silent City hoodoos on a cloudy winter afternoon, Bryce Amphitheatre, Inspiration Point, Bryce Canyon National Park, Utah, United States of America, North America

Silent City hoodoos, cloudy winter early morning, Bryce Amphitheatre, Bryce Point, Bryce Canyon National Park, Utah, United States of America, North America

Red-hued limestone arch lit by morning sun with snowy cliffs in winter at Natural Bridge, Bryce Canyon National Park, Utah, United States of America, North America

Hoodoos, cliffs, vegetation and distant view with snow, Inspiration Point, Bryce Canyon National Park, Utah, United States of America, North America

Wintry cliffs and hoodoos strongly lit by morning sun with cloudy backdrop, Rainbow Point, Bryce Canyon National Park, Utah, United States of America, North America

Wall of Windows lit by early morning sun, with snowy Peekaboo Loop Trail, Bryce Canyon National Park, Utah, USA

Top-heavy hoodoo, pine trees and cliffs with snow and a cloudy sky, Agua Canyon, Bryce Canyon National Park, Utah, United States of America, North America

Red-hued limestone arch lit by morning sun with snow in winter at Natural Bridge, Bryce Canyon National Park, Utah, United States of America, North America

Snowy cliffs, pine trees and hoodoos lit by morning sun with cloudy sky, Rainbow Point, Bryce Canyon National Park, Utah, United States of America, North America

Hiker takes a break on the Peekaboo Loop Trail in winter, with snowy red rocks and cliffs, Bryce Canyon National Park, Utah, United States of America, North America

Large hoodoo lit by early morning sun, with snow and pine trees, Peekaboo Loop Trail, Bryce Canyon National Park, Utah, United States of America, North America

White sand beach and turquoise waters in front of Fort Jefferson, Dry Tortugas National Park, Florida Keys, Florida, United States of America, North America

Turquoise waters and white sand beach in front of Fort Jefferson, Dry Tortugas National Park, Florida Keys, Florida, United States of America, North America

View of Courthouse Towers, The Organ and Three Gossips at dawn, Arches National Park, Utah, United States of America, North America

Bison (Bison bison), Hayden Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Morning Glory Pool and surrounds, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Backlit moose (Alces alces) cow in profile, Grand Teton National Park, Wyoming, United States of America, North America

Mule deer (Odocoileus hemionus) with open mouth, Grand Teton National Park, Wyoming, United States of America, North America

Cinnamon black bear (Ursus americanus) climbs a tree in search of autumn (fall) berries, Grand Teton National Park, Wyoming, United States of America, North America

Autumn (fall) storm approaches, Mormon Row barn, Antelope Flats, Grand Teton National Park, Wyoming, United States of America, North America

Cold tourists on seat surrounded by steam, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Moose (Alces alces) cow in profile, surrounded by golden autumn (fall) vegetation, Grand Teton National Park, Wyoming, United States of America, North America

Dead trees and steam with mountain backdrop and blue skies, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Tree studded ridges, fog and clouds of a partial temperature inversion, Bryce Canyon, Bryce Canyon National Park, Utah, United States of America, North America

Dawn mist, Mount Moran, Oxbow Bend, Snake River, Grand Teton National Park, Wyoming, United States of America, North America