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Lava stones and Pectol's Pyramid at dusk, Capitol Reef National Park, Utah, Western United States, USA
An adult golden-mantled ground squirrel (Callospermophilus lateralis), in Bryce Canyon National Park, Utah, United States of America, North America
A waterfall running through the Mossy Cave Trail in Bryce Canyon National Park, Utah, United States of America, North America
Close-up of water over rocks, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America
Slickrock, Zion National Park, Utah, United States of America, North America
Desert flowers in Arches National Park, Utah, USA, North America
Friends at Grand Teton National Park, Wyoming, United States of America, North America
Grand Teton National Park waters, Jackson, Wyoming, United States of America, North America
Weakly lit snowy rim, pine trees and hoodoos with cloudy sky, near Agua Canyon, Bryce Canyon National Park, Utah, United States of America, North America
Mesa Arch at sunrise, Canyonlands National Park, Island In The Sky District, Utah, United States of America, North America
Zuni Point at Grand Canyon South Rim in the clouds viewed from Moran Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Sunrise at the Temple of the Sun in Cathedral Valley, Capitol Reef National Park, Utah, United States of America, North America
Road, Death Valley National Park, California, United States of America, North America
Uinta Ground Squirrel (Urocitellus armatus) adult and young, Yellowstone National Park, Wyoming, United States of America, North America
Black Bear (Ursus americanus) sow climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Upper and Lower Yosemite Falls, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
View over valley with colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America
Desert collared lizard (Crotaphytus bicinctores), Mosaic Canyon Trail, Death Valley National Park, California, United States of America, North America
Bighorn Sheep (Ovis canadensis) ram in the snow, Yellowstone National Park, Wyoming, United States of America, North America
Jackson Lake in the Teton range in the Grand Teton National Park, Wyoming, United States of America, North America
Trumpeter swan in river, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Sunset and Turret Arch view through Windows Arch, Arches National Park, Utah, United States of America, North America
Sunrise at Grand View Point, Canyonlands National Park, Utah, United States of America, North America
Joshua tree at dawn, Joshua Tree National Park, California, United States of America, North America
Swiftcurrent Lake at sunset, Glacier National Park, Montana, United States of America, North America
Merced River, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Sunrise over St. Mary Lake, Glacier National Park, Montana, United States of America, North America
Hurricane Ridge, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America
Kiva and other structures at Pueblo Bonito, Chaco Culture National Historic Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Badwater Basin, Death Valley National Park, California, United States of America, North America
Cholla Cactus Garden, Joshua Tree National Park, California, United States of America, North America
View through Windows Arch, Arches National Park, Utah, United States of America, North America
Badlands, Petrified Forest National Park, Arizona, United States of America, North America
Narada Falls, Mount Rainier National Park, Washington State, United States of America, North America
Sea grasses on a Lake Michigan beach, Sleeping Bear Dunes National Park, Glen Arbor, Michigan, United States of America, North America
Autumn colours of Lake McDonald, Glacier National Park, Montana, United States of America, North America
The sun rising at Grand Canyon North Rim, viewed from the Angels Window Overlook at Cape Royal, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
The summit of Tritle Peak off Roosevelt Point on Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Snow covered bison (Bison biso), on the river bank, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Upper Falls in the Grand Canyon of Yellowstone in the Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Colorado River, Canyonlands National Park, Utah, United States of America, North America
Travertine terraces in Mammoth hot springs terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
View over the cliffs of the Zion National Park and the Angel's Landing path, Zion National Park, Utah, United States of America, North America
Colorado River, Canyonlands National Park, Utah, United States of America, North America
Walkway through cold lava in the Craters of the Moon National Park, Idaho, United States of America, North America
Road leading in the Teton range in the Grand Teton National Park, Wyoming, United States of America, North America
Colorado River, Canyonlands National Park, Utah, United States of America, North America
Beautiful red sandstone formations in the Arches National Park, Utah, United States of America, North America
Long sandy beach in the Prince Edward Island National Park, Prince Edward Island, Canada, North America
Granite mountains at sunset, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Vernal Falls, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
A view of the Aialik Glacier, coming off the Harding Ice Field, Kenai Fjords National Park, Alaska, United States of America, North America
A young brown bear (Ursus arctos) along the shoreline at Lake Clark National Park and Preserve, Alaska, United States of America, North America
Park Avenue, Arches National Park, Utah, United States of America, North America
Weathered rocks in Joshua Tree National Park, California, USA.
Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mesa Arch, Canyonlands National Park, Moab, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Half Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
First Beach at dawn, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
View of the North Rim of Grand Canyon National Park from Bright Angel Point, UNESCO World Heritage Site, Arizona, United States of America, North America
Badwater Basin at sunset, Death Valley National Park, California, United States of America, North America
Zabriskie Point at sunrise, Death Valley National Park, California, United States of America, North America
A view of the hoodoos from the Fairyland Trail in Bryce Canyon National Park, Utah, United States of America, North America
Commercial oar boat runs the Deubendorff Rapid, just past river mile 132, Grand Canyon National Park, Arizona, United States of America, North America
Flight seeing from Haines over the Fair-weather Range in Glacier Bay National Park, Southeast Alaska, USA.
Flight seeing from Haines over the Fair-weather Range in Glacier Bay National Park, Southeast Alaska, USA.
A view of Margerie Glacier in the Fair-weather Range, Glacier Bay National Park, Southeast Alaska, USA.
A view of Margerie Glacier in the Fair-weather Range, Glacier Bay National Park, Southeast Alaska, USA.
El Capitan granite rock formation, Yosemite National Park, California, USA
Giant sequoia at Mariposa Grove, Yosemite National Park, California, USA
Tree and rocks, Olmsted Point, Yosemite National Park, California, USA
Rock formations near Turret Arch on sunny day, Arches National Park, Utah, USA
An adult golden-mantled ground squirrel (Callospermophilus lateralis), in Bryce Canyon National Park, Utah, United States of America, North America
Red rock formations known as hoodoos in Bryce Canyon National Park, Utah, United States of America, North America
Hearst Hill viewed from across Hance Canyon on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Logan Pass, Glacier National Park, Montana, United States of America, North America
Rocky landscape and cliffs in the Klondike Bluffs District of Arches National Park, in Utah, United States of America, North America
Balanced Rock, Arches National Park, Moab, Utah, United States of America (U.S.A.), North America
Oxbow Bend, Grand Teton National Park, Wyoming, United States of America, North America
Rim tree and hoodoos with a cloudy winter's sunrise, Rim Trail near Inspiration Point, Bryce Canyon National Park, Utah, United States of America, North America
Bison (Bison bison) in a snowstorm, Yellowstone National Park, Wyoming, United States of America, North America
Sand dune with frost at dawn, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America
Mesa Arch at sunrise, Canyonlands National Park, Island In The Sky District, Utah, United States of America, North America
Eastern section of Zion National Park, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Zion National Park, Utah, United States of America, North America
Canary Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Blue Star Spring, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Gibbon Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bull elk (Cervus canadensis), Rocky Mountain National Park, Colorado, United States of America, North America
Brown Bear (Ursus arctos horribilis) sow and cub, Katmai National Park and Preserve, Alaska, United States of America, North America
A view of Zabriskie Point at sunset, Amargosa Range, Death Valley National Park, California, United States of America, North America
View of stars through Double Arch, Arches National Park, Utah, United States of America, North America
Travertine terraces in Mammoth hot springs terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America