Saguaro cactus (Carnegiea gigantea), photographed at night in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America

photography color image travel destinations travel vertical outdoors night no people arizona usa north america landscape saguaro cactus cactus cloud sky mountain sweetwater preserve tucson copy space desert arid climate travel destination tourist destination tourist destinations outdoor outside nobody no one no person museum museums landscapes nighttime deserts hot heat arid dry