On July 17, 1981, 14-year-old Stacy Ann Arras vanished while on a horseback riding trip in Yosemite National Park, California with her father and a group of others. The group had arrived at the Sunrise High Sierra Camp and after settling in, Stacy decided to take photos of a nearby lake. She was accompanied by a 77-year-old man from their group. As they walked, the man grew tired and sat down to rest while Stacy continued on ahead. She was last seen by a guide standing on a rock about 50 yards s
...Read MoreLast Seen: Jul 17, 1981