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Boulder and deciduous forest, Cades Cove, Great Smoky Mountains National Park, Tennessee
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Camel Butte rising from the desert floor, Monument Valley, Arizona
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Chisos Agave (Agave havardiana) and the Chisos Mountains, Big Bend National Park, Texas
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Dolomite Peak and Bow River backwaters, Banff National Park, Alberta
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Field of sunflowers, Flint Hills National Wildlife Refuge, Kansas
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Full moon over boulders at El Pescador State Beach, Malibu, California
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Geissler Mountain and Linkins Lake, Colorado
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Mammoth Peak, Upper Dana Meadow, Yosemite National Park, California
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Maroon Bells and Maroon Creek in autumn, Colorado
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Marsh, Padre Island National Seashore, Texas
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Memorial Point, Lake Tahoe, Nevada
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Memorial Point, Lake Tahoe, Nevada
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Mitten Rock, New Mexico
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Moon and Twin Peaks reflected in lake, Colorado
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Moon setting as seen from Shelby Hill, Sedona, Arizona
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Mormon row barn, Grand Teton National Park, Wyoming
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Mormon Row Barn, Grand Teton National Park, Wyoming
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Mt Powell and Piney Lake, Colorado
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Mt Spry with the Virgin River surrounded by Cottonwood trees, Zion National Park, Utah
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Nokhu crags, hornfel layers carved by glaciers, Medicine Bow Range, Colorado
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Opuntia (Opuntia sp) and hoodoos, Big Bend National Park, Chihuahuan Desert, Texas
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Organ Mountains, Chihuahuan Desert, New Mexico
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Organ Pipe Cactus, Organ Pipe Cactus National Monument, Sonoran Desert, Arizona
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Organ Pipe Cactus, Organ Pipe Cactus National Monument, Sonoran Desert, Arizona
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Pepperweed meadow beneath El Capitan, Guadalupe Mountains National Park, Texas
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Pointed Phlox and Indian Paintbrushes in bloom, Hill Country, Texas
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Providence Mountains, Kelso Dunes, Mojave National Preserve, California
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Rapids with cliffs above Cache La Poudre River, Colorado
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Reeds growing through frozen surface of June Lake, eastern Sierra Nevada, California
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Rio Grande and Sangre de Cristo Mountains, Colorado
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Rio Grande and the Sangre de Cristo Mountains, Colorado
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Roatan Island, Honduras
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Saguaro amid flowering Lupine, California Brittlebush and Desert Golden Poppies
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Saguaro amid flowering Lupine, California Brittlebush and Desert Golden Poppies
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Saguaro and Teddybear Cholla amid flowering Lupine and California Brittlebush
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Sandstone striations and erosional features, Badlands National Park, South Dakota
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Sandstone striations and erosional features, Badlands National Park, South Dakota
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Sea arch and full moon over El Matador State Beach, Malibu, California
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Shiprock, the basalt core of an extinct volcano, New Mexico
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Shiprock, the basalt core of an extinct volcano, New Mexico
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Square Butte near Kaibito, Arizona
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Steam rising from Mammoth Hot Springs, Yellowstone National Park, Wyoming
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Sun illuminating the Alabama Hills, California
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Sunrise at Hurricane Ridge, Olympic National Park, Washington
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Sunrise at San Luis Reservoir, San Joaquin Valley, California
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Sunset Lake, Yellowstone National Park, Wyoming
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Sunset on mountains in Valley of Fire State Park, Mojave Desert, Nevada
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Teton Range at sunrise, Schwabacher Landing, Grand Teton National Park, Wyoming