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| Organ Pipe Cactus |
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| Soaptree Yucca |
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| Ocotillo Cactus |
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| Saguaro and Ocotillo Cactus |
Organ Pipe Cactus National Monument is a U.S.National Monument and UNESCO biosphere reserve located in extreme southern Arizona that shares a border with the Mexican state of Sonora. The park is the only place in the United States where the organ pipe cactus grows wild.
