http://gulfstrategic.com/gc/wp-content/uploads/logo_final.jpg00PR PRhttp://gulfstrategic.com/gc/wp-content/uploads/logo_final.jpgPR PR2021-03-15 13:35:512021-03-15 17:06:35'Dark Watchers' have been spooking California hikers for centuries. What are they? - Livescience.com