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Two young yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), San Juan National Forest, Colorado, United States of America, North America

Young yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris) with grass in its mouth, San Juan National Forest, Colorado, United States of America, North America

Young yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris) adult and young, San Juan National Forest, Colorado, United States of America, North America

Black-tailed jackrabbit (Lepus californicus), Pawnee National Grassland, Colorado, United States of America, North America

Orange clouds at dawn over a tarn, San Juan 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

Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), San Juan National Forest, 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

View over Atacama Desert towards Cerro Colorado, San Pedro de Atacama, Antofagasta Region, Chile, 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

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

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

View of the Colorado River from the Glen Canyon Dam Bridge on Highway 89, 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

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

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

Skip Brown paddles his whitewater kayak through rapids on the Colorado River through the Grand Canyon, Arizona, 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

Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, 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

Colorado River flowing through Marble Canyon, viewed above Cathedral Wash, adjacent to 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

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

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

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

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

Elk (Cervus canadensis) in Rocky Mountain National Park, Colorado, 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

Sandstone hoodoo formation north of the Horseshoe Bend Overlook along the Colorado River in Page, Arizona, 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

Bend of Colorado River at Dead Horse Point at sunrise, Dead Horse Point State Park, Utah, United States of America, North America

Moose (Alces alces) calf eating, Colorado State Forest State Park, 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

Confluence of the Little Colorado and Colorado Rivers, 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

Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, 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

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

Two mountain goat (Oreamnos americanus) kids, Mount Evans, 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

Blue columbine (Aquilegia coerulea) in a meadow, Maroon Bells-Snowmass Wilderness, White River National Forest, Colorado, United States of America, North America

Gorges of Colorado River, Dead Horse Point State Park, Moab, Utah, 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

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 Steller's jay (Cyanocitta stelleri) in Rocky Mountain National Park, Colorado, United States of America, North America

Yellow and orange aspen in the fall, Uncompahgre National Forest, 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

Dead Horse Point State Park, view from point down into Colorado River canyon, Moab, Utah, 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

Mountain goat (Oreamnos americanus) nanny and kid, Mount Evans, Colorado, United States of America, North America

Yellowbelly marmot (yellow-bellied marmot) (Marmota flaviventris), Mount Evans, Colorado, United States of America, North America

Hiker on Longs Peak Trail, Rocky Mountain National Park, Colorado, United States of America, North America

Grey Crowned Crane (Southern Crowned Cran) (Balearica regulorum) in captivity, Denver Zoo, Denver, 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

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

An eroded Sandstone hoodoo formation north of the Horseshoe Bend Overlook along the Colorado River in Page, 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

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

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

Porphyry Basin Waterfall, San Juan 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

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

A hiker in 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

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

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

Mules taking tourists along the Colorado River Trail, Grand Canyon, Arizona, United States of America, North America

Porphyry Basin and 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

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