Steven Linne Jonas, 28, of Moscow, Idaho, vanished on July 8, 1983, while working a seasonal maintenance job at Crater Lake National Park in Oregon. He was last seen near his vehicle, which was discovered precariously perched on the edge of a cliff in Annie Creek Canyon. A visitor reported seeing him by the car, but park rangers found the vehicle and no sign of Steven.

Searches with helicopters, search dogs, and volunteers failed to turn up evidence or remains. Reports say Steven had been struggling with mental health problems and made concerning comments about harming himself the day he disappeared, a detail authorities have noted but which has not led to a conclusive explanation. The circumstances of his disappearance remain unsolved.

If anyone was at Crater Lake or Annie Creek Canyon on July 8, 1983, or has information about Steven’s movements or state of mind that day, please share what is known.