Cho Oyu Ascent and Attempt from the South in the Pre-Monsoon. Malcolm Duff from Scotland led an international group consisting of 6 Britons, 1 New Zealander, 2 Americans and 1 Venezuelan to Cho Oyu. On May 8, Britons Duff, Dave Horrex and Neil Lindsey, New Zealander Clive Jones, Venezuelan José Delgado and Pasang Gombu Sherpa reached the summit. An Austrian expedition of four led by Herbert Mayerhofer attempted the western side of Cho Oyu from Nepal. They reached a highpoint of 8000 meters on April 27.