Ajo Mountain Loop

Organ Pipe Cactus National Monument was created in 1937 as a way to preserve a representative area of the Sonoran Desert. The new monument was part of a movement in the National Parks to protect not just scenic wonders but also the ecological wonders of the country. Over 75 years later, Organ Pipe Cactus is now one of the best preserved examples of the Sonoran Desert wilderness. Within the monument, signs of human use are also preserved and protected. The monument is the site of culture and history that reflect long, widespread and diverse use by American Indian, Mexican, and European groups. The intersection of these three cultures is significant archeologically, geographically, and internationally. Gentle spring rains, turbulent summer skies, and the penetrating sun set the stage at Organ Pipe Cactus National Monument. Volcanic layered mountains, ribbons of washes and expansive valleys are the backdrop for this International Biosphere Reserve. Species of plants and animals that have adapted to desert life present themselves in daily and nocturnal performances. Take a front row seat along a scenic drive, a wilderness hike, or camping among the stars. Over a hundred miles of scenic drives, dozens of miles of hiking trails, campgrounds, new exhibits and ranger programs help you experience, observe, and explore the American Desert. Source: http://www.nps.gov/orpi/learn/index.htm