Career
He, along with the Italian mountaineer, Walter Bonatti, are also known for having survived a night at the highest open bivouac - 8,100 metres (26,600 ft) - on K2 in 1954. He is also referred as Hunza Tiger. In July 1953 a German-Austrian team went for expedition to Nanga Parbat.
The expedition was organized by the half-brother of Willy Merkl, Karl Herrligkoffer from Munich, while the expedition leader was Peter Aschenbrenner from Innsbruck, who had participated in the 1932 and 1934 attempts.
Hermann Buhl one of team member made it to the top and became first person to reach the summit. He was assisted by two high altitude porters from Hunza, Amir Mehdi and Haji Baig.
They later helped Buhl during his descent, when he was caught by frost bite and lost his crampon. During the Italian expedition, he and Walter Bonatti were stranded by Achille Compagnoni and Lino Lacedelli, who wanted to prevent Bonatti from reaching the summit, and were forced to huddle on an ice ledge overnight at 8,100 metres (26,600 ft), the highest ever open bivouac at the time.
As Mehdi was wearing standard army boots, he lost all his toes to frostbite and spent 8 months in hospital recovering from the ordeal.
The Italian government awarded him the rank of cavaliere.