Celeste Wyma Hensley Greub, 20, disappeared on August 10, 1976, while hiking with two friends in the Cloud Peak Wilderness of the Bighorn Mountains, Johnson County, Wyoming. Near the Cloud Peak trailhead she told her companions she was tired and stayed behind to rest; when they returned around 5:00 p.m. she was gone. She had no supplies with her, only some candy, and lived in Casper, Wyoming at the time.

An extensive search of roughly eighty square miles involved between 200 and 300 people, bloodhounds, helicopters and volunteers on horseback but turned up nothing; the official search was called off after two weeks. The day after Greub’s disappearance, other hikers saw a woman matching her description walking toward an unnamed lake between Misty Moon Lake and Gunboat Lake near Florence Pass, but they were too far away to identify or contact her. Some speculation suggested she left voluntarily because of marital problems; her family said she had been excited about the trip and helped plan it.

No confirmed trace of Celeste Greub has emerged since 1976. Did anyone hike in the Cloud Peak area in August 1976 and see someone who might have been Celeste?