_J4A8252.tif
Organ Pipe, cholla and saguaro cactus with Tillotson Peak (3225 ft) in Organ Pipe Cactus National Monument, Arizona. One of the first mountain peaks seen along the Ajo Mountain Drive.
©Tom & Pat Leeson
Organ Pipe Cactus National Monument, Arizona, Tillotson Peak, Ajo Mountain Drive, desert, Sonoran Desert, desert, UNESCO biosphere reserve, Biosphere Reserve, Organ Pipe cactus, organpipe cactus, Stenocereus thurberi, saguaro cactus, Carnegiea gigantea, cholla, cactus, cacti, scenic, landscape, leesonphoto, horizontal