Stock Photo: Two cloud-to-ground lightning strikes in a rain curtain at sunset in Avra Valley, silhouetting a lone saguaro cactus in the Sonoran Desert. Tucson, Arizona, USA.

Stock Photo: 1899-50042 Two cloud-to-ground lightning strikes in a rain curtain at sunset in Avra Valley, silhouetting a lone saguaro cactus in the Sonoran Desert.   Tucson, Arizona, USA.