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Pueblo Bonito Chaco Culture National Historical Park scenery, New Mexico, United States of America, North America

Saguaro cacti, Saguaro National Park, Tuscon Mountain District west unit, Tucson, Arizona, United States of America, North America

The Teton Range at first light after a fresh snow, 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

Red fox (Vulpes vulpes) in the snow, Grand Teton National Park, Wyoming, United States of America, North America

Salmon-coloured sandstone wall with evergreens, Grand Staircase-Escalante National Monument, Utah, United States of America, North America

Sandstone, hills at first light, Grand Staircase-Escalante National Monument, Utah, United States of America, North America

Coyote (Canis latrans) in the snow, Yellowstone National Park, Wyoming, United States of America, North America

Strange rock formations in the Roosevelt National Park, North Dakota, United States of America, North America

Thor's Hammer in early morning from Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America

Porcelain Springs, Porcelain Basin, Norris Geyser Basin, 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

South Kaibab Trailhead overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Tourists at Mather Point, early morning, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Last light on Half Dome above Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Two sub-adult grizzly bears (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America

Male Williamson's sapsucker (Sphyrapicus thyroideus) poking out of its nest hole, Yellowstone National Park, Wyoming, 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

Early morning mist over Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Snow pillows on the Dolores River, San Juan National Forest, Colorado, 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

Three black bear (Ursus americanus) cubs of the year or spring cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Unicorn Peak reflected in Tuolumne Grove seasonal ponds, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Elk (Cervus canadensis) near Lake Village, Yellowstone National Park, Wyoming, United States of America, North America

Lamplugh Glacier in Glacier Bay National Park, southeast Alaska, United States of America, North America

Golden cottonwood trees on banks of the Virgin River, Zion National Park, Utah, United States of America (U.S.A.), North America

Lembert Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Rocks covered with lichen, Deer Park, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Mormon Row barn, Antelope Flats, Grand Teton National Park, Wyoming, United States of America, North America

Tourists on boardwalk over the mineral runoff from Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Sapphire Pool, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Female Mountain Bluebird (Sialia currucoides) with food at the nest, Yellowstone National Park, Wyoming, United States of America, North America

Line of Bison (Bison bison) crossing the Lamar River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

A sandstone butte in Chaco Culture National Historical Park scenery, New Mexico, United States of America, North America

Badlands at first light, Badlands National Park, South Dakota, United States of America, North America

River otter (Lutra canadensis), Yellowstone National Park, Wyoming, United States of America, North America

The Tetons at dawn after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America

Sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America

North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The northern part of the Roosevelt National Park, North Dakota, 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

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, Hungo Pavi, UNESCO World Heritage Site, New Mexico, United States of America, North America

Two men sitting, Delicate Arch, Arches National Park, Moab, Utah, United States of America, North America

Hickman Bridge Trail, Navajo Dome, Capitol Reef National Park, 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

Clouds over the San Juan Mountains, San Juan National Forest, Colorado, 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

Bison (Bison bison) cow nursing her calf, Yellowstone National Park, Wyoming, United States of America, North America

Cinnamon-colored black bear (Ursus americanus) walking, Yellowstone National Park, Wyoming, United States of America, North America

High Sierra mountain scenery from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Yosemite Valley beneath pink twilight skies, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America

Black bear (Ursus americanus) in the snow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Pronghorn (Antilocapra americana) bucks sparring, Yellowstone National Park, Wyoming, United States of America, North America

Aspens in the fall in fog, Grand Mesa National Forest, Colorado, United States of America, North America

Tenaya Lake on the Tioga Pass in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Yosemite Valley and Bridalveil Fall from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Hoodoos, on the Queens Garden Trail, Bryce Canyon National Park, Utah, 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

Mesquite Sand Dunes at dawn, Death Valley National Park, California, United States of America, North America

Pines at Mystic Falls, near Biscuit Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Pink sunset sky above Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

The Cathedral Group of Mount Teewinot, Mount Owen and Grand Teton from the Snake River at Schwabacher's Landing, Grand Teton National Park, Wyoming, United States of America, North America

Yellowstone River in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Moss-covered tree trunks in the rainforest, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America

Theodore Roosevelt National Park North Unit, Watford, North Dakota, United States of America, North America

Marymere Falls, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America

Pu'ukohola Heiau National Historic Site, Big Island, Hawaii, United States of America, North America

Carpenters' Hall, Independence National Historical Park, Old City District, Philadelphia, Pennsylvania, United States of America, North America

Bison (Bison bison) cow in the winter, Yellowstone National Park, Wyoming, United States of America, North America

The Teton Range at first light after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America

Hikers on the sand dunes, Great Sand Dunes National Park and Preserve, with Sangre Cristo Mountains in the background, Colorado, United States of America, North America

Yosemite Falls and Merced River in spring, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Bull elk (Cervus canadensis) feeding in the winter, Yellowstone 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

Sunrise at Mather Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Red rock cliffs and badlands, Capitol Reef National Park, Utah, United States of America, North America

Petroglyphs near Una Vida, Chaco Culture National Historical Park, UNESCO World Heritage Site, New Mexico, United States of America, North America

Checkerboard Mesa, formed of Navajo sandstone, Zion National Park, Utah, United States of America, North America