Karoly Janos Oris, 24, of Budapest, Hungary, was reported missing on Mt. Hood, Oregon, on September 4, 2001. He had arrived in the United States three weeks earlier on an agricultural exchange program and was last seen at Tilly Jane Campground after separating from his colleagues about 6 a.m., saying he intended a 12-hour exploration of the northeastern wilderness.

Oris was lightly dressed in blue jeans and a black T-shirt and is believed to have had a raincoat and a small amount of food and water in a daypack. He did not tell companions his route or sign trail registers. A five-day search involving about 200 experienced mountaineers and regional teams, plus an infrared scan by the 304th Air Force Reserve Rescue Squadron, covered terrain from Laurance Lake to Mt. Hood Meadows before officials suspended the official search after concluding survivable areas had been exhausted.

Authorities and family noted his fascination with mountains, snow, and ice, and investigators believe he may have climbed toward Cooper Spur Ridge and into glacial terrain where crevasses and cliffs pose extreme danger. Hikers on Mt. Hood are still asked to be watchful for any signs of him. Did anyone who was on Mt. Hood that day or who hikes Cooper Spur regularly notice anything unusual?