Langtang Lirung, Swiss-West German and British-lrish Ascents. There were two successful expeditions on Langtang Lirung (7234 meters, 23,734 feet), both by the southeast ridge. On November 10, Swiss Markus Baumann, Frau Dorothee Landolt, Martin Lochstampfer and Fritz Mauer reached the summit, followed the next day by the Swiss leader Hans Berger, German Fräulein Barbara Leitz and Swiss Liselotte Schmidt. On November 12, Irishman Declan MacMahon got to the top, completing the 12th ascent of the peak. He was a member of the expedition led by Briton Andrew Creigh.