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Lower Yosemite Falls, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Bison (Bison bison) in snow, Yellowstone National Park, Wyoming, United States of America, North America
Badwater Basin, Death Valley National Park, California, United States of America, North America
Badwater Basin, Death Valley National Park, California, United States of America, North America
Half Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Half Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
View from Cape Royal, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Tenaya Lake, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Tree and rocks, Olmsted Point, Yosemite National Park, California, USA
Tenaya Lake, Yosemite National Park, California, USA
Scenic view of Grand Canyon from South Kaibab Trail, Grand Canyon National Park, Arizona, USA
Bison calf (Bison bison), Yellowstone National Park, Wyoming, United States of America, North America
Rock Needle, Needles District, Canyonlands National Park, 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
Bryce Canyon National Park, Utah, United States of America, North America
The towering cliffs of the Zion National Park, Utah, United States of America, North America
Sol Doc River, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America
Grand Canyon viewed before sunset, west of Papago Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
A view of the upper Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Hoodoos and cliffs with snow lit by late afternoon sun, from Rim Trail near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Snowy mounds on the shore of Sprague Lake, Rocky Mountain National Park, Colorado, United States of America, North America
Zion National Park, 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
The Chimney, Capitol Reef National Park, Utah, United States of America, North America
Grizzly bear (Ursus horribilis), Glacier National Park, Montana, United States of America, North America
Onyx Bridge at Petrified Forest National Park, Arizona, United States of America, North America
A view of Natural Bridge Canyon in Death Valley National Park, California, 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
Moon view between the rocks, Arches National Park, Utah, United States of America, North America
Clouds reflecting in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hall of Mosses rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
An adult desert collared lizard (Crotaphytus bicinctores), basking in Grand Canyon National Park, Arizona, United States of America, North America
Road through the national park, Death Valley National Park, California, USA, North America
South Window, Arches National Park, Utah, United States of America, North America
Yosemite Falls, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Yosemite Falls, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Delicate Arch, Arches National Park, Utah, USA, North America
Bryce Canyon National Park, Utah, United States of America, North America
Tower Arch, Arches National Park, Utah, United States of America, North America
View from Cape Royal, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Delicate Arch, Arches National Park, Moab, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Park Avenue, Arches National Park, Moab, Utah, United States of America, North America
Detail of hoodoos and trees, Sunset Point, Bryce Canyon National Park, Utah, USA
Rock formations, Needles District, Canyonlands National Park, Utah, United States of America, North America
Speleothems, Davies Springs, Carlsbad Caverns National Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Alligator, Anhinga Trail, Everglades National Park, Florida, United States of America, North America
Carlsbad Caverns, Carlsbad Caverns National Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Rocks along the coastline in the Acadia National Park, Maine, New England, United States of America, North America
The Morning Glory Pool, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Trees beside a river frame the snow capped Half Dome mountain in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Tundra landscape with snowline in the background on the Alaska Range of mountains, in the Denali National Park, Alaska, United States of America, North America
The Morning Glory Pool, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Pinnacles and rock formations known as The Silent City, seen from Inspiration Point, with snow on the ground, in the Bryce Canyon National Park, Utah, United States of America, North America
Close-up of Joshua tree with rocks and trees in the background, in the Joshua Tree National Park, California, United States of America, North America
Pinnacles and rock formations caused by erosion and known as The Silent City, seen from Inspiration Point, in the Bryce Canyon National Park, Utah, United States of America, North America
The Merced River swollen by summer snowmelt, with the Yosemite Falls in the background, in the Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Rock formations caused by erosion, and a solitary pine tree above the Queens Garden, in the Bryce Canyon National Park, in Utah, United States of America, North America
Sign at south entrance to the Park, trees in fall colours, and the Mountain of the Sun and the Twin Brothers peaks, in the Zion National Park, Utah, United States of America, North America
Solitary ponderosa pine on top of a sandstone outcrop in the Zion National Park, in Utah, United States of America, North America
Hills near Loft Mountain in autumn in the Shenandoah National Park, Virginia, United States of America, North America
Steam plumes from hot lava flowing onto beach and into the ocean, Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North America
View over Silent City from Sunset Point, Bryce Canyon National Park, Utah, USA, North America
A visitors centre in wetlands, Everglades National Park, Florida, United States of America, North America
Viewing walkway, Everglades National Park, Florida, United States of America, North America
Beauty Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Area near Loft Mountain, Shenandoah National Park, Virginia, United States of America (U.S.A.), North America
Mount McKinley, at 20320 feet the highest peak in North America, Denali National Park, Alaska, United States of America (U.S.A.), North America
Upper Yosemite Falls cascades down the sheer granite walls of Yosemite Valley, the world's longest unbroken fall, with the famous 8842 ft Half Dome in the distance, Yosemite National Park, UNESCO World Heritage Site, California, United States of America (U.S.A.), North America
Farmstead in the old pioneer community at Cades Cove, Great Smoky Mountains National Park, UNESCO World Heritage Site, Appalachians, Tennessee, United States of America (U.S.A.), North America
View from the Alum Cave Bluffs trail in Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America (U.S.A.), North America
Snowline on Alaska Range, Denali National Park, Alaska, United States of America, North America
Part of the North Unit of Badlands National Park, carved out of the prairies by rapid water erosion of sediments, South Dakota, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Tunnel Log, 275 ft long, which fell in 1937, Sequoiadendron giganteum, Sequoia National Park, California, United States of America, North America
Coastline, Acadia National Park, Maine, New England, United States of America (U.S.A.), North America
Coastal brown bear, Ursus arctos, Lake Clark National Park, Alaska, United States of America, North America
Atlantic Coastline, Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America
Tourists inspecting the large halite salt crystal formations, Devils Golf Course, Death Valley National Park, California, United States of America, North America
Cliff Palace, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Skylight, view through cooled lava to molten lava below, with plumes of steam as lava reaches the sea beyond, Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island', Hawaii, United States of America, North America
The Racetrack Point, Death Valley National Park, California, United States of America, North America
Woman looking over Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Woman looking over Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bighorn sheep (Ovis canadensis) ram in the snow, Yellowstone National Park, Wyoming, United States of America, North America
Tourists dwarfed by the General Sherman Sequoia Tree, largest in the world by volume, Sequoia National Park, California, United States of America, North America
Early morning light on corrugated badlands landscape at Zabriskie Point, Death Valley National Park, California, United States of America, North America
Grizzly bear (Ursus Arctos), Brooks Falls, Katmai National Park, Alaska, United States of America, North America
Mountain stream beside Going to the Sun road, near Logan Pass, Glacier National Park, Montana, United States of America, North America
Aspen trees in autumn colours, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Alaskan brown bear (grizzly), grazing on tundra berries, Denali National Park, Alaska, United States of America, North America
Carlsbad Caverns, Carlsbad Caverns National Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Haleakala National Park, volcanic landscape and summit visitors center, Maui Island, Hawaii, United States of America, North America
Person snorkelling near tropical beach, Dry Tortugas National Park, Florida, United States of America, North America
Passageway, Fort Jefferson, Dry Tortugas National Park, Florida, United States of America, North America
Elk (Cervus canadensis) with tourists along the Madison River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Climbing expedition on Mount McKinley, 6194m, Denali National Park, Alaska, United States of America, North America