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Grizzly bear (Ursus arctos horribilis) sow, Yellowstone National Park, Wyoming, United States of America, North America
Hiker 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
North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Tenaya Lake on the Tioga Pass, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Small bush in the wash near a sandstone butte, Capitol Reef National Park, Utah, United States of America, North America
A cowboy wrangler leads a pack train of horses up the South Kaibab Trail in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Johns Hopkins Glacier calving, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Half Dome from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Summit of Longs Peak, a mountain above 14000 feet, known as a 14er, Rocky Mountain National Park, Colorado, United States of America, North America
Siltstone eroded formations of Zabriske Point, Furnace Creek, Death Valley National Park, California, United States of America, North America
Red leaves on a bigtooth maple (Acer grandidentatum) surround a Ponderosa pine trunk in the fall, Zion National Park, Utah, United States of America, North America
Reflections in pools among the sandstone, Zion National Park, Utah, United States of America, North America
Upper and Lower Yosemite Falls, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
Panoramic photo of Court of the Patriarchs, Abraham Peak, Isaac Peak, Mount Moroni and Jacob Peak, Zion National Park, Utah, United States of America, North America
Blue Funnel spring, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Pipe Creek Vista Point Overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Mesa Arch, Island in the Sky, Canyonlands National Park, Utah, United States of America, North America
Male dusky grouse (blue grouse) (Dendragapus obscurus) displaying, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) in the rain, Glacier National Park, Montana, United States of America, North America
Yellow pine chipmunk (Eutamias amoenus), Yellowstone National Park, Wyoming, United States of America, North America
St. Mary Falls, Glacier National Park, Montana, United States of America, North America
Prairie smoke (purple aven) (old man's whiskers) (long-plumed avens) (Geum triflorum), Yellowstone National Park, Wyoming, United States of America, North America
Excelsior Geyser Crater, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Coyote (Canis latrans) on the snow in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Elk (Cervus canadensis) near Lake Village, Yellowstone National Park, Wyoming, United States of America, North America
Firehole Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Lower Falls, Grand Canyon, Yellowstone National Park, Wyoming, USA
Mount Moroni and the Virgin River in autumn, Zion National Park, Utah, USA
Lake reflecting trees and the Cathedral Rocks in the Yosemite National Park, California, USA
The Queens Garden from Navajo Loop Trail, Bryce Canyon National Park, Utah, USA, North America
View from Yavapai Point, in evening light, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America
Christine Falls, Mount Rainier National Park, Washington state, United States of America, North America
Sunset lights The Watchman, Virgin River overlook in winter, Zion National Park, Utah, United States of America, North America
Teton Range, footbridge and pines with reflections, Bradley Lake, Grand Teton National Park, Wyoming, United States of America, North America
Black Canyon of the Gunnison National Park, Gunnison River deep in the canyon, Colorado, United States of America, North America
Bison (Bison bison) calf, Yellowstone National Park, Wyoming, United States of America, North America
Bison (Bison bison) bull in the winter, Yellowstone National Park, UNESCO World Heritage Site, 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
Half Dome and Yosemite Valley from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Pine growing on a sandstone hill, Zion National Park, Utah, United States of America, North America
Red leaves on a big tooth maple (Acer grandidentatum) near a Ponderosa pine (Pinus ponderosa) trunk in the fall, Zion National Park, Utah, United States of America, North America
Coyote (Canis latrans) in the snow, Yellowstone National Park, Wyoming, United States of America, North America
The enormous face of El Capitan towering above Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Johns Hopkins Inlet, Fairweather Range, Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
View of Grand Canyon west of the historic Watch Tower, managed by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America
The moon rising, Glacier National Park, Montana, United States of America, North America
Desert cottontail (Sylvilagus auduboni), Wind Cave National Park, South Dakota, United States of America, North America
Aspen trees in autumn below Longs Peak, a mountain above 14000 feet, known as a 14er, Rocky Mountain National Park, Colorado, United States of America, North America
El Capitan, a 3000 feet granite monolith, with the Merced River flowing through the flooded meadows of Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
El Capitan, a 3000 feet granite monolith, with the Merced River flowing through Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
A twisted very old Bristlecone Pine (Pinus longaeva), on sage brush covered slopes of dolomite limestone, in the Ancient Bristlecone Pine Forest Park, Inyo National Forest, Bishop, California, United States of America, North America
Sunset at Locust Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Barn, Thomas Alma and Lucille Moulton Homestead, Mormon Row Historic District, Grand Teton National Park, Wyoming, United States of America, North America
Liberty Cap, a dormant hot spring cone, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Abyss Pool, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Coyote (Canis latrans), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hoary marmot (Marmota caligata), Glacier National Park, Montana, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, 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
Black bear (Ursus americanus) sow and cub-of-the-year coming down from a tree, Yellowstone National Park, Wyoming, United States of America, North America
Bison (Bison bison) cows sparring, Yellowstone National Park, Wyoming, United States of America, North America
Bison (Bison bison) bull, Yellowstone National Park, Wyoming, United States of America, North America
Hellen Lake with Mount Lassen, 3187 m, in the background, Lassen Volcanic National Park, California, United States of America, North America
Black bear (Ursus americanus) in the snow, Yellowstone National Park, Wyoming, United States of America, North America
Lassen Volcanic National Park, California, United States of America, North America
Grizzly bear (Ursus arctos horribilis) in the snow in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Bridalveil Fall in spring Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Lower Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly Bear (Ursus arctos horribilis), Yellowstone National Park, Wyoming, United States of America, North America
Yellowstone River near Calcite Springs, Yellowstone National Park, UNESCO Wortld Heritage Site, Wyoming, 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
Inspiration Point, Bryce National Park, Utah, United States of America, North America
Landscape Arch, Arches National Park, Utah, United States of America, North America
Detail of a totem pole on display at Sitka National Historical Park in Sitka, Baranof Island, Southeast Alaska, United States of America
Painted Desert, Death Valley National Park, California, United States of America, North America
Echinus Geyser, erupts every hour, Norris Basin, Yellowstone National Park, Wyoming, USA
Blue Mesa, Petrified Forest National Park, Arizona, USA
Blue Mesa, Petrified Forest National Park, Arizona, USA, North America
Sol Duc Falls, Olympic National Park, UNESCO World Heritage Site, Washington state, United States of America, North America
Grand Geyser erupts and steam blocks the sun, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Male Yellow-Headed Blackbird (Xanthocephalus xanthocephalus), Yellowstone National Park, Wyoming, United States of America, North America
Male Audubon's Yellow-Rumped Warbler (Dendroica coronata auduboni), Yellowstone National Park, Wyoming, United States of America, North America
Alaska Range, Denali National Park and Preserve, Alaska, United States of America, North America
Willow Ptarmigan (Lagopus lagopus), Katmai National Park and Preserve, Alaska, United States of America, North America
Badger (Taxidea taxus), 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
Bighorn Sheep (Ovis canadensis) ram feeding, Yellowstone National Park, Wyoming, United States of America, North America
The Teton Range at dawn after a fresh snow, Grand Teton National Park, Wyoming, United States of America, North America
The northern part of the Roosevelt National Park, North Dakota, United States of America, North America
Sunrise over El Capitan and Yosemite Valley from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Mesa Verde National Park, Spruce Tree House, UNESCO World Heritage Site, Colorado, United States of America, North America
Cathedral Beach, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Majestic view of Yosemite Valley from Tunnel View, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Rock formations in The Needles, Canyonlands National Park, Utah, United States of America, North America
Tent illuminated under the night sky, Rocky Mountain National Park, Colorado, United States of America, North America
Mountains and tundra in fall color, Denali National Park and Preserve, Alaska, United States of America, North America
Lone Ponderosa pine atop a sandstone formation at first light, Zion National Park, Utah, United States of America, North America
El Capitan, a 3000 feet granite monolith, with the Merced River flowing through Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
Queen Nefertiti rock formation, Arches National Park, Utah, United States of America, North America