Mt. Haddo. Tewes calls this peak “Sheol,” but there is no doubt as to the summit which he and C. Bohren attained. Crossing Castle Crags, they found the Aberdeen Glacier too steep and therefore took to the face and ridge of Mt. Haddo, of which they made the first ascent. They continued thence to Mt. Aberdeen, descending its southern shale slope to the Lefroy Glacier.