6009062 Native porters carrying the equipment of the expedition over the Pamirs, 17,400 feet above sea-level (b/w photo) by European Photographer, (19th century); Private Collection; (add.info.: Native porters carrying the equipment of the expedition over the Pamirs, 17,400 feet above sea-level. Illustration for Heroes of Modern Adventure by T C Bridges and H Hessell Tiltman (Harrap, 1927).); by Look and Learn; out of copyright.