Age of canvas: Northern Tian Shan
Zaural'tsev Pass, 4100m.
The pass is in the Main Crest of Zailiyskiy Alatau Range, the Northern-most of the two parallelel mountain ranges making up the Northern Tian Shan Mountains near the Kazakh-Kyrghyz boundary. The pass leads from Chon-Kemin drainage in the South, up Druzhba Glacier, to Dmitriev Glacier in the headwaters of North Talgar River.
August 1980. Note that the backpack, the harness, the crampons straps - everything's made of khaki-colored canvas :)