Mandana Boushehri, 22, left Twisp, Washington around July 22, 1984 for a 4–6 week backpacking trip that took her through Walla Walla and into Wallowa County, Oregon. She was last heard from on August 2, 1984 while in the vicinity of Imnaha, on the edge of Hells Canyon National Recreation Area. The last known sighting was by an Imnaha Cafe worker who said a female Forest Service employee gave Mandana a ride to the Imnaha Road, likely on August 3 or 4; after that she was never seen or heard from again.

Mandana was not an experienced backpacker. She is described as 5 feet 4 inches, 110 pounds, with brown hair and brown eyes. A missing person report was filed with the Wallowa County Sheriff’s Office on September 27, 1984 after her expected return date passed.

A puzzling clue arrived at her Twisp home: a package postmarked August 4, 1984 from the Tri-Cities area, addressed to Mandana and containing her driver’s license, passport, and personal notes. Who mailed those items and why they turned up at her home days after the last sighting remains unexplained.

If anyone knew Mandana, saw her in or near Imnaha in late July or early August 1984, or has information about the package, please come forward.