In 1971, Slovak mountaineers Ivan Fiala and Michal Orolin summited Nanga Parbat via Buhl's 1953 route while other expedition members climbed the southeast peak (7,600 m or 24,900 ft) above the Silbersattel and the foresummit (7,850 m or 25,750 ft) above the Bazhin Gap. In 1976 a team of four made the sixth summit via a new route on the Rupal Face (second ascent on this face), then named the Schell route after the Austrian team leader. The line had been plotted by Karl Herrligkoffer on a previous unsuccessful attempt. In 1978, Reinhold Messner returned to the Diamir Face and achieved the first completely solo ascent of an 8,000-metre (26,000 ft) peak.