large cactus carnegiea gigantea at sunset in the saguaro national park, near tucson, pima county, southeastern arizona, unit

america arizona autumn beautiful blue cactaceae cacti cactus carnegiea cedar cloud country county desert dry evening family flora gigantea landscape large national natural nature north october park pima plant saguaro salt scene scenery scenic setting silhouette sky sonoran southeastern southwestern states summer sun sunlight sunrise sunset tamarisk tamarix thicket tourism travel tucson twilight typical united usa view