He led the International Himalaya Expedition (IHE) 1930 to Kangchenjunga, and another one, IHE 1934, to the Baltoro-region in the Karakorams, especially to explore the Gasherbrum-Group.
Many of the highest peaks in Gilgit–Baltistan, such as Baltoro Muztagh, K2 (Mount Godwin-Austen) (8,611 m), the second-highest mountain in the world), the Gasherbrums (7,932 - 8,080 meters, ranked 12-17 in the world), and Masherbrum (7,821 m), 22nd-highest in the world), lie in the Skardu District.