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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

Young yellowbelly marmot (Marmota flaviventris) grooming, Uncompahgre National Forest, Colorado, United States of America, North America

Porphyry Basin Waterfall, San Juan National Forest, 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

James Flamingo (Phoenicoparrus jamesi), at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South 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

Floating in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Colorado River viewed from the cliffs of Desert View Point at Grand Canyon South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

An adult brown pelican (Pelecanus occidentalis) in flight at Punta Colorado, Isla San Jose, Baja California Sur, Mexico, 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

Bullion King Lake at dawn, Porphyry Basin, San Juan National Forest, Colorado, United States of America, North America

The Vermilion Cliffs adjacent to Glen Canyon Recreation Area viewed from the plateau at the end of Spencer Trail in Marble Canyon with Lee's Ferry on the lower left with the Colorado River, Arizona, United States of America, North America

Adult Sally Lightfoot crab (Grapsus grapsus) at low tide on Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America

Fall colors of aspens with evergreens, near Ouray, Colorado, Uninted 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

An adult golden-mantled ground squirrel (Callospermophilus lateralis) feeding in Rocky Mountain National Park, 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

Lost Lake at dawn in the fall, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America

Llamas at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South America

The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, 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

Rock formation known as Swirls, on Colorado Plateau, Arizona, United States of America (U.S.A.), North America

Aspens in fall colors with mountains, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America

Beaver (Castor canadensis) swimming, Colorado State Forest State Park, Colorado, United States of America, North America

Sally lightfoot crab (Grapsus grapsus), moulted exoskeleton at Punta Colorado, Baja California Sur, Mexico, North America

Layers of yellow aspen and evergreen in the fall, White River National Forest, Colorado, United States of America, North America

Uinta chipmunk (Tamias umbrinus) eating, Grand Mesa National Forest, Colorado, United States of America, North America

Rafters on the Colorado River through the Grand Canyon, Arizona, United States of America, North America

Virgin River und Angel's Landing, Zion National Park, Colorado Plateau, Utah, United States of America, North America

Aspens in fall colors with mountains and evergreens, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America

Captive short-eared owl (Asio flammeus) in the snow, Boulder County, Colorado, United States of America, North America

Male wood duck (Aix sponsa) swimming, Belmar Historic Park, Lakewood, Colorado, United States of America, North America

Mule deer (Odocoileus hemionus) buck in snow, Roxborough State Park, Colorado, United States of America, North America

Paradise Divide, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America

Aspen trunks in the fall, White River National Forest, Colorado, United States of America, North America

Cow moose (Alces alces), Roosevelt 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

The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Yellow aspens and an evergreen in the fall, San Juan National Forest, Colorado, United States of America, North America

Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

Shooting rapids in a kayak on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Cow parsnip (Heracleum lanatum) and Alpine sunflower (Hymenoxys grandiflora) with Crested Butte in the distance, Washington Gulch, Gunnison National Forest, Colorado, United States of America, North America

Mountain bluebird (Sialia currucoides) male feeding female, near Castlewood Canyon State Park, Colorado, United States of America, North America

White-tailed ptarmigan (Lagopus leucurus) hen among wildflowers, Uncompahgre National Forest, Colorado, United States of America, North America

Aspen grove in early fall, White River National Forest, Colorado, United States of America, North America

Coyote (Canis latrans) feeding on an elk carcass in Rocky Mountain National Park, Colorado, United States of America, North America

Coyote (Canis latrans) feeding on an elk carcass in Rocky Mountain National Park, Colorado, United States of America, North America

An adult golden-mantled ground squirrel (Callospermophilus lateralis), Rocky Mountain National Park, Colorado, United States of America, North America

Female Pronghorn (Antilocapra americana) running, Park County, Colorado, United States of America, North America

Lane through fall aspens, Ophir Pass, Uncompahgre National Forest, Colorado, United States of America, North America

Yellow aspens and snow-covered mountains, Uncompahgre 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

American Pika (Ochotona princeps), Uncompahgre National Forest, Colorado, United States of America, North America

Riverside Walk, Temple of Sinawava, Zion National Park, Colorado Plateau, Utah, United States of America, North America

Navajo Bridges as seen from the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Old cliff dwellings and cliff palace in the Mesa Verde National Park, Colorado, USA *** Local Caption ***

Detail of waterfall on Sneffels Creek, Yankee Boy Basin, Uncompahgre National Forest, Colorado, United States of America, North America

An adult black vulture (Coragyps atratus), perched in a tree on Barro Colorado Island, Panama, Central America

Juvenile American robin (Turdus migratorius), Gunnison County, Colorado, United States of America, North America

Porphyry Basin Waterfall, San Juan National Forest, Colorado, United States of America, North America

Field of showy daisy (Erigeron speciosus), Grand Mesa-Uncompahgre-Gunnison 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

The South Kaibab Trail winding down to the Black Bridge that spans the Colorado River at Grand Canyon Arizona. Phantom Ranch is just left of center.

Maroon Bells reflected in Maroon Lake with fall color, White River National Forest, Colorado, United States of America, North America

Yellow aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America

West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

An adult common chuckwalla (Sauromalus ater), at Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America

Shooting rapids in a kayak on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Marble Canyon along the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, 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

Mountain stream through Palmeto Gulch with golden aster (Chrysopsis villosa), Gunnison National Forest, Colorado, United States of America, North America

Cathedral Rock with snow, Garden Of The Gods, Colorado Springs, Colorado, United States of America, North America

Fall sunset near Owl Creek Pass, Uncompahgre National Forest, Colorado, United States of America, North America

The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Maroon Bells reflected in Maroon Lake with fall color, White River National Forest, Colorado, United States of America, North America

Golden-mantled squirrel (Citellus lateralis), Routt National Forest, Colorado, United States of America, North America

View over the canyonlands and the Colorado River from the Dead Horse State Park, Utah, United States of America, North America

Orange aspens in the fall with snow at a lake, Grand Mesa National Forest, Colorado, United States of America, North America

Yellow and orange hillside of aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America

West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

Shooting rapids in a kayak on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, 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

An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America

Spruce tree house, one of the cliff dwellings in the Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Fall colors of aspens with evergreens, near Ouray, Colorado, Uninted States of America, North America

Maroon Bells with fall color, White River National Forest, Colorado, United States of America, North America