This section of the Sonoran Desert near the border between Arizona and Mexico features massive cacti, colorful birds and rock arches. An International Biosphere Reserve and a federally designated wilderness area, this park preserves the only large concentration of organ pipe cacti in the country, as well as hundreds of other native plant species, such as saguaro, cholla, mesquite and palo verde trees, and ocotillo. Hike on the park's nine scenic trails or take a drive on the 21-mile Ajo Mountain Drive to experience the vibrant desert landscape.
More about Organ Pipe Cactus
Trip Sonoran Desert Mystique The Sonoran Desert holds mesmerizing contrasts—driven by the most interesting paradox of all: The Sonoran is our hottest North American desert, while it is also our wettest. Light but consistent rains in winter and spring foster more diversity than in perhaps any other desert in the world, from cactus to cottonwoods to cougars.
Magazine Article Unusual Suspects What triggered the fall of Organ Pipe’s acuña cactus?