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Front view of the historic Glen Canyon Dam in Page, viewed from the Highway 89 Bridge over the Colorado River, Arizona, United States of America, North America
A wavy sandstone formation with a puddle of water north of the Horseshoe Bend Overlook along the Colorado River in Page, Arizona, United States of America, North America
Sandstone hoodoo formation north of the Horseshoe Bend Overlook along the Colorado River in Page, Arizona, United States of America, North America
The Colorado River makes a huge S-bend under Deadhorse Point, a famous viewpoint across Canyonlands National Park, near Moab, Utah, United States of America, North America
Wood Duck (Aix sponsa) drake swimming, Sterne Park, Littleton, Colorado, United States of America, North America
Three mountain goat (Oreamnos americanus) kids, Mount Evans, Colorado, United States of America, North America
Whitetail prairie dog (Cynomys luscurus), Arapaho National Wildlife Refuge, Colorado, United States of America, North America
Two young yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), San Juan National Forest, Colorado, United States of America, North America
A deer (Cervidae) in a meadow in Breckenridge, Colorado, United States of America, North America
Elk (Cervus canadensis) in Rocky Mountain National Park, Colorado, United States of America, North America
Aspen Mountain and old building, Aspen, Colorado, USA
Looking up at bare aspen trunks, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America
Mountain goat (Oreamnos americanus) nanny and kid, Mount Evans, Colorado, United States of America, North America
Black-tailed jackrabbit (Lepus californicus), Pawnee National Grassland, Colorado, United States of America, North America
Horseshoe Bend on the Colorado River, Page, Arizona, United States of America, North America
Confluence of the Little Colorado and Colorado Rivers, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bend in Colorado River near Lee's Ferry, Glen Canyon Recreation Area, Vermilion Cliffs National Monument in background, Arizona, United States of America, North America
A Chipmunk (Tamias) on a log in the forest of Breckenridge, Colorado, United States of America, North America
A Badger (Taxidea taxus) consuming a Prairie dog, Colorado, United States of America, North America
Cliff palace ruins dating from 1200-1300 AD shaded in limestone overhang, Mesa Verde, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America (U.S.A.), North America
Mountain lion stalking, Colorado, United States of America, North America
Yellow and orange aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Skip Brown surfs his whitewater kayak on a glassy standing wave on the Colorado River through the Grand Canyon, Arizona, United States of America, North America
Elk (Cervus canadensis) in Rocky Mountain National Park, Colorado, United States of America, North America
Sandstone rock formations, Colorado plateau, Page, Arizona, United States of America, North America
Rock formation known as Swirls on the Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Bear Lake in winter, Rocky Mountain National Park, Colorado, United States of America, North America
Owl Creek Pass palisade with fall color, Uncompahgre National Forest, Colorado, United States of America, North America
Yellowbelly marmot (yellow-bellied marmot) (Marmota flaviventris), Mount Evans, Colorado, United States of America, North America
Two mountain goat (Oreamnos americanus) kids, Mount Evans, Colorado, United States of America, North America
View of the Colorado River from the Glen Canyon Dam Bridge on Highway 89, Arizona, United States of America, North America
Bend in Colorado River near Lee's Ferry, Glen Canyon Recreation Area, Vermilion Cliffs National Monument in background, Arizona, United States of America, North America
Elk (Cervus canadensis) in Rocky Mountain National Park, Colorado, United States of America, North America
Elk (Cervus canadensis) in Rocky Mountain National Park, Colorado, United States of America, North America
Montezuma Valley Outlook, the park contains some of the most elaborte Pueblo dwellings found today, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
An area of the Little Colorado River Gorge east of the Grand Canyon, Arizona, Uninted States of America, North America
Female rufous hummingbird (Selasphorus rufus) perched, Routt National Forest, Colorado, United States of America, North America
Ancient Nankoweap granary high above the Colorado River through the Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Snowmass Ski Area near Aspen, Colorado, USA
Rock formation known as Swirls, on Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River and part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Mules taking tourists along the Colorado River Trail, Grand Canyon, Arizona, United States of America, North America
Adult mantled howler (Alouatta palliata), Barro Colorado Island, Gatun Lake, Panama, Central America
Grey Crowned Crane (Southern Crowned Cran) (Balearica regulorum) in captivity, Denver Zoo, Denver, Colorado, United States of America, North America
Moose (Alces alces) calf eating, Colorado State Forest State Park, Colorado, United States of America, North America
Maroon Bells with fall color, White River National Forest, Colorado, United States of America, North America
Orange aspens in the fall among evergreens covered with snow at a lake, Grand Mesa National Forest, Colorado, United States of America, North America
View over Atacama Desert towards Cerro Colorado, San Pedro de Atacama, Antofagasta Region, Chile, South America
Colorado River flowing through Marble Canyon, viewed above Cathedral Wash, adjacent to the Glen Canyon Recreation Area, Arizona, United States of America, North America
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
Rock formation known as Swirls on Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Yellowbelly marmot (Marmota flaviventris) standing, Mount Evans, Colorado, United States of America, North America
Orange and yellow aspen leaves, White River National Forest, Colorado, United States of America, North America
Blue columbine (Aquilegia coerulea) in a meadow, Maroon Bells-Snowmass Wilderness, White River National Forest, Colorado, United States of America, North America
The bend in the Colorado River at Lee's Ferry in Glen Canyon Recreation Area viewed from the plateau at the end of Spencer Trail at Marble Canyon in winter, Arizona, United States of America, North America
James Flamingo (Phoenicoparrus jamesi), at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South America
A hiker in Marble Canyon along the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, Arizona, United States of America, North America
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
An adult black vulture (Coragyps atratus), perched in a tree on Barro Colorado Island, Panama, Central America
The Jerome Hotel, Aspen, Colorado, USA
Spruce Tree House Ruins, Pueblo ruins in Mesa Verde containing some of the most elaborte Pueblo dwellings found today, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Mesa Top Loop Road Ruins, Pueblo ruins in Mesa Verde containing some of the most elaborte Pueblo dwellings found today, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Porphyry Basin Waterfall, San Juan National Forest, Colorado, United States of America, North America
The Dyke with fall colors, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America
Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), Camp Hale, White River National Forest, Colorado, United States of America, North America
Hiker on Longs Peak Trail, Rocky Mountain National Park, Colorado, United States of America, North America
James Flamingo (Phoenicoparrus jamesi), at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South America
Dead Horse Point State Park, view from point down into Colorado River canyon, Moab, Utah, United States of America, North America
Rapids on the Colorado River, Marble Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
The naturally formed Redwall Cavern, Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Skip Brown paddles his whitewater kayak through rapids on the Colorado River through the Grand Canyon, Arizona, United States of America, North America
Frosty leaf, near Ouray, Colorado, United States of America, North America
Vail Ski Resort and the Gore Mountains, Vail, Colorado, United States of America, North America
Pica (Pica pica), Clear Lake, San Juan National Forest, Colorado, United States of America, North America
An adult Steller's jay (Cyanocitta stelleri) in Rocky Mountain National Park, Colorado, United States of America, North America
Old silver mines near Silverton, Colorado, United States of America, North America
Layers of yellow aspen and evergreen in the fall, White River National Forest, Colorado, United States of America, North America
Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, Arizona, United States of America, North America
Colorado River flowing through Marble Canyon, viewed above Cathedral Wash, adjacent to the Glen Canyon Recreation Area, Arizona, United States of America, North America
Dirt mountain road with aspens and cottonwoods in fall color, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Porphyry Basin and Waterfall, San Juan National Forest, Colorado, United States of America, North America
Silver mines near Silverton, Colorado, United States of America, North America
Female Pronghorn (Antilocapra americana) running, Park County, Colorado, United States of America, North America
Mountain goat (antelope) in winter coats on Quandary Peak, a mountain above 14000 feet, known as a 14er, Colorado, United States of America, North America
Uinta chipmunk (Tamias umbrinus) eating, Grand Mesa National Forest, Colorado, United States of America, North America
Orange aspens in the fall among evergreens covered with snow at a lake, Grand Mesa National Forest, Colorado, United States of America, North America
Virgin River und Angel's Landing, Zion National Park, Colorado Plateau, Utah, United States of America, North America
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
An adult black vulture (Coragyps atratus), perched in a tree on Barro Colorado Island, Panama, Central America
Spruce Tree House Ruins, Pueblo ruins in Mesa Verde containing some of the most elaborte Pueblo dwellings found today, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Horseshoe Bend, Colorado River, near Page, Arizona, United States of America, North America
Young yellowbelly marmot (Marmota flaviventris) grooming, Uncompahgre National Forest, Colorado, United States of America, North America
Maroon Bells with fall color, White River National Forest, Colorado, United States of America, North America
Bull elk (Cervus canadensis) fighting in rut in Rocky Mountain National Park, Colorado, United States of America, North America
Yellow aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Landscape of fields and farms with rock cliffs in the background, in Colorado, United States of America, North America