In 1929 he was a member of the Italian Geographical Expedition to Karakoram, under the leadership of the Duke of Spoleto, in the capacity of geographer and geologist. On this occasion he covered Kashmir and Baltistan in Northern Pakistan, and developed his scientific activity in the valleys of Baltoro and Panmah glaciers on the south slope of the range, and in the Sarpo Laggo and Shaksgam valleys, between the Karakorum and the Aghil ranges, the Abruzzi valley climbing, for the first time, the Conway Pass. The results of this expedition are contained in a volume, which was published under the aegis of the Royal Geographical Society and the Italian Alpine Club in 1936.