On July 31, 1956, he reached the western summit of the snow-capped Chacraraju Oeste (6112 m.), the impossible mountain due to its extreme difficulties. Terray He reaches the summit with the help of a large expedition.

SECOND PROMOTION
In 1962 he returned with another expedition to climb the east face of the east summit of the snow-capped Chacraraju (6001 m.), in this case with him there was also a large group of French mountaineers.

ANOTHER IMPORTANT ASCENSION
In 1956, as always in love with the Cordillera Blanca, he reached the summit of the snow-capped Taulliraju (5840 m.) on the north face or wall.