Kirkendall-Spring / View over the Campbell Lakes with stormy clouds at dusk, viewed from Walker Valley Overlook in Hart Mountain National Antelope Refuge, Oregon, USA, May 2013.
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Juan Carlos Munoz / Eroded sandstone patterns on walls of Lower Canyon, Antelope Canyon, Page, Arizona, USA, February 2015.
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Kirkendall-Spring / Petroglyph at Petroglyph Lake in Hart Mountain National Antelope Refuge, Oregon, May 2013.
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Kirkendall-Spring / Blue sky with clouds above road in Heart Mountain National Antelope Refuge, Oregon, USA, May 2013.
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Kirkendall-Spring / Blue sky with clouds above road in Heart Mountain National Antelope Refuge, Oregon, USA, May 2013.
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Charlie Summers / American Pronghorn Antelope (Antilocapra americana) Doe seeks refuge in a pond during the rut from anxious Buck, Custer State Park, South Dakota, USA
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Jack Dykinga / Saguaro {Carnegia gigantea} and Cholla cacti {Opuntia sp} Antelope Hills, Cabeza Prieta National Wildlife Refuge, Arizona, USA
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Michael Durham / Pronghorn Antelope (Antilocapra americana) male on grassland, Hart Mountain National Wildlife Refuge, Oregon
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Michael Durham / Pronghorn Antelope (Antilocapra americana) male and female on grassland at sunrise, Hart Mountain National Wildlife Refuge, Oregon
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Michael Durham / Pronghorn Antelope (Antilocapra americana) male on grassland at sunrise, Hart Mountain National Wildlife Refuge, Oregon
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Enrique Lopez-Tapia / Antelope Canyon, a slot canyon formed of Navajo sandstone and shaped by water erosion, Arizona, USA.
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Enrique Lopez-Tapia / Antelope Canyon, a slot canyon formed of Navajo sandstone and shaped by water erosion, Arizona, USA.
