Achille Compagnoni and Lino Lacedelli reached the summit of K2 for the first time on the 1954 Italian Karakoram expedition to K2 but for over fifty years the 1954 Italian Karakoram expedition controversy dragged on concerning whether the official report written by the expedition's leader, Ardito Desio, gave a true picture of the expedition. That the climbers did indeed reach the summit was never in dispute.