Huandoy. In early July Germans Heinrich Gentner and Reinhard Siegl climbed Huandoy Norte and Sur via the eastern couloir (Garganta) route from the Cook Glacier; they established camp in the central basin. They reported technical ice conditions in the couloir complicated by avalanche hazard. These two later disappeared while climbing Huascarán. Bill Smith and Steve Belk, English, members of a Peruvian expedition, climbed Huandoy Norte by the same route on July 24.