Theodore Sander III, 47, was last seen on August 20, 1977, in the mountains above Convict Lake in Mono County, California. An experienced hiker, Sander drove to the lake early that morning, parked his car, and apparently set out on a hike in the rugged Sierra Nevada terrain but never returned.

Sander is described as a white male with brown hair and blue eyes, standing 6 feet 1 inch and weighing between 160 and 180 pounds. He may have been wearing G.I. pants and a blue windbreaker. The circumstances point toward a possible accident or fall while hiking, yet no remains or personal effects have ever been recovered.

The Mono County Sheriff‑Coroner’s office holds the case file and his profile is on NamUs. Does anyone who frequented Convict Lake in 1977 or who has knowledge of that area’s trails and historical searches have information that could help locate Theodore?