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 senita and organ pipe cactus grow wild.[citation needed] Along with this species, many other types of cacti and other desert flora native to the Yuma Desert section of the Sonoran Desert region grow in the park. Organ Pipe Cactus National Monument is 517 sq mi (1,340 km2) in size. In 1976 the monument was declared a Biosphere Reserve by UNESCO, and in 1977 95% of Organ Pipe Cactus was declared a wilderness area.
Land for the Monument was donated by the Arizona state legislature to the federal government during Prohibition knowing that the north–south road would be improved and make contraband alcohol easier to import from Mexico.[citation needed] In 1937 the land was officially opened as a national monument.[3]
At the north entrance of the park is the unincorporated community of Why, Arizona; the town of Lukeville, Arizona at the park's southern border is a border crossing point to Sonoyta, Sonora, Mexico.
Organ Pipe Cactus National Monument is bordered to the northwest by Cabeza Prieta National Wildlife Refuge and to the east by the Tohono O'odham Indian Reservation.[4]
^"Listing of acreage – December 31, 2011" (XLSX). Land Resource Division, National Park Service. Retrieved 2012-05-14. (National Park Service Acreage Reports)
^"NPS Annual Recreation Visits Report". National Park Service. Retrieved 2019-06-15.
^"Listing of National Park System Areas by State". National Park Service. Retrieved 2011-06-30.
^Brean, Henry (August 15, 2019). "Trump administration delays border wall work in Arizona preserves". Arizona Daily Star. Retrieved August 15, 2019.
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peaks: Pinacate, Carnegie and Medio. It is a sister park to OrganPipeCactusNationalMonument in Arizona. Its wildlife is threatened by the militarization...
in OrganPipeCactusNationalMonument, Arizona. Journal of the Arizona-Nevada Academy of Science 18: 61-68. National Park Service (NPS). 2006. Organ Pipe...
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Arizona. OrganPipeCactusNationalMonument is located in this desert, as are the Kofa National Wildlife Refuge and Cabeza Prieta National Wildlife Refuge...
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tarantula hawk species known to frequent Quitobaquito Springs at OrganPipeCactusNationalMonument in Arizona, near the U.S.–Mexico border, along with Pepsis...
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common name refers to the Quitabaquito Springs Oasis, in OrganPipeCactusNationalMonument, Arizona. Bogan, A.E. (1996). "Tryonia quitobaquitae". IUCN...
the northeast by the town of Ajo, and to the southeast by OrganPipeCactusNationalMonument. Located within the Yuma Desert, a lower-elevation section...
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