The first ascent in July 1957 by the Austrian mountaineers Toni Egger [de; fr; it] and Siegfried Jungmair over the (north)east face[9] has been called "one of the boldest climbing feats ever performed in the Cordillera".

[11] In 1964 Gary Colliver and Glen Denny of an American expedition climbed the north ridge to the slightly lower north summit, but a traverse over the "cockscomb of ice" connecting to the main summit has so far not been attempted.

[10] On July 6, 1969, an Italian team led by the 60-year-old Riccardo Cassin forged the first route through the West face.

[12] On July 31, 1971 the Americans Dean Caldwell and Jon Bowlin first climbed the southwest face in two days.

[13] In 1973, a Japanese team led by Masayuki Shinohara succeeded in climbing the south east face for the first time, though it took them 49 days.