Donald Joseph Rohrenbacher, 44, disappeared after a solo hike in the San Gabriel Mountains north of Los Angeles County on March 18, 1994. His last known area was around Highway 39 near San Gabriel Canyon. His car was found abandoned between Pigeon Ridge and Valley of the Moon, but two severe storms had struck the area before discovery and likely washed away any footprints or clues near the vehicle.

Rohrenbacher was described as very close to his two dogs, which were left at home, and meat was defrosting in his kitchen—both details family and friends said were uncharacteristic and did not fit with a planned long absence. Multiple rescue teams searched the mountains extensively but found no trace. His absence was not reported for a week, a delay that complicated the investigation. He was presumed dead three years later, but no remains have been located and the case remains classified as lost or injured missing.

Does anyone have information about hikes or travel on Highway 39 and San Gabriel Canyon around March 18, 1994 that could help this case?