Some saguaros grow in rare formations called a cristate, or "crested" saguaro. This growth formation is believed to be found in one in roughly 10,000 saguaros. The crest formation, caused by fasciation, creates a seam of abnormal growth along the top or top of the arm of the saguaro. This monstrous specimen was seen in Saguaro National Park on Tucson's east side. #strange