tall native saguaro cactus in the sonora desert in arizona with natural foliage and shrubs on side of hill

flower summer nature hill saguaro arizona cactus desert landscape sonoran ocotillo cholla southwest plant usa phoenix wilderness wash vegetation rock formation mountains canyon four peaks tonto national forest sunset blooming bloom fall america setting sun sunny family cactaceae carnegiea gigantea pima county north park prickly pear signal mountain bear monument october scenic tall native sonora natural foliage shrubs side whispy cloud blue sky late afternoon hike