Giant Saguaro cactus with a lightning bolt hitting beside it. Taken in the high sonoran desert in north Scottsdale Arizona. Monsoon Season 8.05.09 9:49:57PM 2008. 25 secound long exposure. Fact: Lightning is enormous electrical discharge is caused by an imbalance between positive and negative charges. Cloud-to-ground lightning is a great lightning discharge between a cumulonimbus cloud and the ground initiated by the downward-moving leader stroke. Buy this Artwork as Fine Art Print, Canvas Print, Custom Framed Giclee Print and Greeting Cards. Guaranteed to liven any decor. Great Conversation piece too! All artwork has a 30-day, no questions asked, return policy. Plus All transactions are secure and private. Worldwide FAST shipping to your door.