Organ Pipe and Saguaro cacti in front of Mount Ajo, along the Ajo Mountain Drive at Organ Pipe Cactus National Monument, a UNESCO Biosphere Reserve near the Mexican border in southern Arizona, USA.
Organ Pipe, Saguaro, and Cholla Cacti in front of Mount Ajo, along the Ajo Mountain Drive at Organ Pipe Cactus National Monument, a UNESCO Biosphere Reserve in southern Arizona, USA.
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