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Clouds reflected in a tarn at Stony Pass, San Juan National Forest, Colorado, United States of America, North America
Kiva in foreground, Step House Ruin, dates from 626AD to 1226AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
View over the Colorado River, Utah, United States of America, North America
Denver Art Museum, Denver, Colorado, United States of America, North America
Skyline, Denver, Colorado, United States of America, North America
Pioneer Monument, Denver, Colorado, United States of America, North America
Horseshoe Bend on the Colorado River, Page, Arizona, United States of America, North America
Alpine hills and rugged peaks, Rio Grande National Forest, Colorado, United States of America, North America
Clear Lake, San Juan National Forest, Colorado, United States of America, North America
Punta Colorado, Isla San Jose, Gulf of California (Sea of Cortez), Baja California Sur, Mexico, North America
Art Museum and Public Library, Denver, Colorado, USA
Orange aspens in the fall, San Juan National Forest, Colorado, United States of America, North America
Cascades on the Big Bear Creek in the fall, San Miguel County, Colorado, United States of America, North America
Yellow and orange aspens among evergreens in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Civic Center Park and skyline, Denver, Colorado, United States of America, North America
Skyscrapers on Broadway, Denver, Colorado, United States of America, North America
Loggerhead shrike (Lanius ludovicianus), Pawnee National Grassland, Colorado, United States of America, North America
Tejon Street, Colorado Springs, Colorado, United States of America, North America
Skyline, Denver, Colorado, United States of America, North America
Stream through marsh marigold or elk's lip (Caltha leptosepala) and Parry's primrose (Primula parryi), American Basin, Colorado, United States of America, North America
Landscape near Cripple Creek, Colorado, United States of America, North America
Broncho Buster sculpture in the Civic Center Cultural Complex, Denver, Colorado, United States of America, North America
Red aspen leaf with water drops, near Telluride, Colorado, United States of America, North America
Clark's nutcracker (Nucifraga columbiana), Rocky Mountain National Park, Colorado, United States of America, North America
Snow-covered mountains in the spring from Trail Ridge Road, Rocky Mountain National Park, Colorado, United States of America, North America
Denver Post Building on Broadway Street, Denver, Colorado, United States of America, North America
Mesa Verde, UNESCO World Heritage Site, Colorado, United States of America, North America
Stream through wildflowers, American Basin, Uncompahgre National Forest, Colorado, United States of America, North America
Clock tower on the Pioneers Museum, Colorado Springs, Colorado, United States of America, North America
Golden eagle (Aquila chrysaetos) in the rain, in captivity, Boulder County, Colorado, United States of America, North America
Aspens in fall colors reflected in Crystal Lake, near Ouray, Colorado, United States of America, North America
The train driver and engine of the Durango and Silverton passenger steam train, Colorado, United States of America, North America
Narrow gauge steam railway in autumn, Silverton, Colorado, USA, North America
Caldera Colorado, volcanic landscape, Parque Nacional de Timanfaya, Lanzarote, Canary Islands, Spain, Europe
Close-up of a greeat horned owl, Bubo Virginiarius, Colorado, United States of America, North America
Rock formation known as Swirls on Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Aspen trunks and fall foliage, near Telluride, Colorado, United States of America, North America
Snow-capped Red Mountain reflected in Crystal Lake with fall colors, near Ouray, Colorado, United States of America, North America
Aspen grove with early fall colors, Maroon Lake, 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
Winding mountain road in 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
Double-crested cormorant (Phalacrocorax auritus), Sterne Park, Littleton, Colorado, United States of America, North America
Wood duck (Aix sponsa) hen and ducklings swimming, Arapahoe County, Colorado, United States of America, North America
Dall sheep (Ovis dalli) mother and two-day-old lamb in captivity, Denver Zoo, Denver, Colorado, United States of America, North America
Maroon Bells with fall colors during a clearing storm in the evening, White River National Forest, Colorado, United States of America, North America
Wood Duck (Aix sponsa) drake swimming, Sterne Park, Littleton, Colorado, 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
Yellow and orange aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Canyon country and bend of Colorado River, Dead Horse Point, Dead Horse Point State Park, Utah, United States of America, North America
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
Adult crested guan (Penelope purpurascens), Barro Colorado Island, Gatun Lake, Panama, Central America
Swift fox (Vulpes velox) kits nursing, Pawnee National Grassland, Colorado, United States of America, North America
Swift fox (Vulpes velox) kit biting its mother's ear, Pawnee National Grassland, Colorado, United States of America, North America
Pygmy short-horned lizard (Phrynosoma douglasi douglasi), Pawnee National Grassland, Colorado, United States of America, North America
Swift fox (Vulpes velox) kit, Pawnee National Grassland, Colorado, United States of America, North America
Swift fox (Vulpes velox) kit, Pawnee National Grassland, Colorado, United States of America, North America
Two evergreen trees among yellow aspen trees in the fall, White River National Forest, Colorado, United States of America, North America
Sunset at Dowdy Lake, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America
Yellow aspens and evergreens in the fall, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America
Female broad-tailed hummingbird (Selasphorus platycercus) in flight, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America
Female broad-tailed hummingbird (Selasphorus platycercus) in flight, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America
Female broad-tailed hummingbird (Selasphorus platycercus) perched, Routt National Forest, Colorado, United States of America, North America
James Flamingo (Phoenicoparrus jamesi), at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South America
Adult Sally Lightfoot crab (Grapsus grapsus) at low tide on Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America
View from cliff edge over the Colorado River at Horseshoe Bend, dawn, Glen Canyon National Recreation Area, Page, Arizona, United States of America, North America
Glen Canyon Dam on the Colorado River, Lake Powell, Glen Canyon National Recreation Area, Page, Arizona, United States of America, North America
Swift fox (Vulpes velox) adult and kit, Pawnee National Grassland, Colorado, United States of America, North America
Western meadowlark (Sturnella neglecta), Pawnee National Grassland, Colorado, United States of America, North America
Tree and Colorado River in the background, Dead Horse Point State Park, Moab, Utah, United States of America, North America
Horseshoe Bend in the Colorado River, Page, Arizona, United States of America, North America
Horseshoe Bend in the Colorado River, Page, Arizona, United States of America, North America
Floating in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Shooting the rapids in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Horseshoe Bend on the Colorado River, Glen Canyon National Recreation Area, Arizona, 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
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
Wood Duck (Aix sponsa) drake swimming, Sterne Park, Littleton, Colorado, United States of America, North America
Bend of Colorado River at Dead Horse Point, Dead Horse Point State Park, Utah, United States of America, North America
Bend of Colorado River at Dead Horse Point, Dead Horse Point State Park, Utah, United States of America, North America
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
American pika (Ochotona princeps), Mount Evans, Colorado, United States of America, North America
Two swift fox (Vulpes velox) kits playing, Pawnee National Grassland, Colorado, United States of America, North America
Shooting the rapids in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
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 deer (Cervidae) in a meadow in Breckenridge, Colorado, United States of America, North America
Prairie dogs (Cynomys) embracing each other in Colorado, United States of America, North America
The sandstone spire of Castleton Tower dominates the Castle Valley, near the Colorado River and Moab, Utah, United States of America, North America
Orange clouds at dawn over a tarn, San Juan National Forest, Colorado, United States of America, North America
Elk (Cervus canadensis) in Rocky Mountain National Park, 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
Female Mallard (Anas platyrhynchos) swimming, Sterne Park, Littleton, Colorado, United States of America, North America
The Colorado River winds through the sheer cliffs of Marble Canyon, south of the Grand Canyon, Arizona, United States of America, North America
Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America
Three mountain goat (Oreamnos americanus) kids, Mount Evans, Colorado, United States of America, North America
Yellow aspens and snow-covered mountains, Uncompahgre National Forest, Colorado, United States of America, North America
Yellow-Bellied Marmot or Yellowbelly Marmot (Marmota flaviventris) pups playing, San Juan National Forest, Colorado, United States of America, North America
Horseshoe Bend on the Colorado River, Page, Arizona, United States of America, North America
Muleshoe Bend, Colorado River, Glen Canyon, Arizona, USA, North America