Corwin Charles Osborn, 45, of Bellevue, Washington, disappeared from the Three Sisters Wilderness on June 17, 2001. His father dropped him at the Devils Lake Trailhead at 6:00 a.m. for an ambitious plan to climb the South, Middle and North Sisters in a single day — an approximately forty-mile route. He was last seen near the summit of the Second Sister about half an hour after setting out and was due to meet his father at 9:00 p.m. at the Lava Camp Lake Trailhead; he never arrived.

An immediate, multiagency search followed, involving county rescue teams, Air Force Reserve units and the Oregon National Guard. Searchers combed snowfields, glaciers and steep rock on foot, horseback and by helicopter; occasional leads, including a canine scent and helicopter-observed tracks, proved not to be his. Osborn had been traveling lightly with only a small backpack, a space blanket and about a day’s worth of food and water. No sign of him or his belongings has ever been found.

If anyone was in the Three Sisters area on June 17, 2001, or has information about unusual activity on those peaks that day, please come forward.