Arizona, a southwestern U.S. state, is best known for the Grand Canyon, the miledeep chasm
carved by the Colorado River. Flagstaff, a ponderosa pine
covered mountain town, is a major
gateway to the Grand Canyon. Other nat
ural sites include Saguaro National Park, protecting cactus
filled Sonoran Desert landscape. Tucson is University of Arizona territory and home to the Arizona

Sonora Desert Museum