Mount Leatherman and Other Winter Ascents, Big Lost River Range. Rick Albano and I made the following climbs, which we believe were the first winter ascents: Mount Leatherman, up the west ridge and down east ridge, on March 19, Class V; P 11,899 (west of Leatherman) via south ridge, on March 18, Class IV; P 12,023 (southeast of Leatherman) via west face and south ridge, on March 21, Class V. The Class V climbs both had pitches of F5, loose rock and high avalanche danger. Despite these factors, the range offers reasonable scope for winter climbing, especially for long ridge traverses.

William March, Idaho State University Outdoor Program