Donald George Siskar, 18, disappeared from the trail on Grass Mountain, about fifteen miles east of Enumclaw, during the summer of 1973. On July 10 he was working with the Northwest Youth Corps as one of nine young men clearing trail; he was the last person in line as the crew hiked out and failed to reach the bus.

Search and rescue teams, including bloodhounds, scoured the rugged terrain but found no trace of Donald or his belongings. He was a student at Enumclaw High School, described as 5 feet 10 inches, 140 pounds, with brown hair and brown eyes. When last seen he wore a brown jacket over a blue sweater, brown or gold Levi’s jeans, a white hard hat, a black Western-style belt with a large gold buckle, and carried a white cloth lunch sack with a thermos.

His family maintains he would not have run away. The King County Sheriff’s Office still lists the case open as a lost or injured missing person, but no new leads have been reported. Did anyone who worked or hiked on Grass Mountain in July 1973 see Donald or recall unusual activity that day?