An undisputed new altitude record was achieved in 1909 by the Duke of the Abruzzi's expedition to the Karakoram. After failing to make progress on K2 the Duke led an attempt on Chogolisa, where they reached a height of approximately 7,500 m (24,600 ft) before turning around just 150 m below the summit due to bad weather and the risk of falling through a cornice in poor visibility.