Arthur Estes, 25, vanished on May 24, 1976, after being dropped off at the junction of Tioga Road and May Lake Road to start a planned two-day hike. He intended to hike toward Yosemite Valley via the Snow Creek Trail and was last known to be near May Lake. An experienced hiker, Estes was 5 feet 10 inches and weighed 165 pounds at the time.

Extensive searches turned up no trace of him. The area around May Lake has been linked to other missing-persons cases, and that context has heightened the unanswered questions about what happened on his trip. No definitive explanation for his disappearance has been reported.

If anyone hiked the Snow Creek Trail or was in the May Lake area on or around May 24, 1976, can you help fill in what happened to Arthur Estes?