-The Organ Pipe Cactus National Monument is a U.S. national monument and UNESCO biosphere reserve in Pima County, Arizona
-Located in the Sonoran Desert, on the Arizona-Mexico border
-Established in 1937
-Only place in the United States where the organ pipe cactus grows wild
-The monument's elevations range from about 980 feet to over 4,800 feet at the summit of Mount Ajo, the highest peak in the park
-Home to many animals, including desert bighorn sheep, mule deer, javelinas, mountain lions, gray foxes, coyotes, desert tortoises, Gila monsters, tarantulas, scorpions, and a variety of lizards and snakes