With towering saguaros that are native only to the northern Sonoran Desert, the Saguaro National Park is a beautiful and unique place for an Arizona desert hike. Making a Sonoran Desert hike here even more remarkable is the abundance of petroglyphs in the park.
The site of the Arizona-Sonora Desert Museum in Tucson used to be underwater. When the water and swamps retreated, a rugged landscape was left behind. The caves filled with fossils, dinosaur bones resting in the rocks, and petrified mud still clinging to ancient hillsides make up what we call today the Sonoran Desert.