Together with Peter Habeler, Messner made a second ascent of Gasherbrum I on 10 August 1975, becoming the first man ever to climb more than two eight-thousanders. It was the first time a mountaineering expedition succeeded in scaling an eight-thousander using alpine style climbing. Until that point, all fourteen 8000-meter peaks had been summitted using the expedition style, though Hermann Buhl had earlier advocated West Alpine Style (similar to capsule style, with a smaller group relying on minimal fixed ropes).