Crowley decided to climb Kanchenjunga in the Himalayas of Nepal, widely recognised as the world’s most treacherous mountain. The collaboration between Jacot-Guillarmod, Charles Adolphe Reymond, Alexis Pache, and Alcesti C. Rigo de Righi, the expedition was marred by much argument between Crowley and the others, who thought that he was reckless. They eventually mutinied against Crowley’s control, with the other climbers heading back down the mountain as nightfall approached despite Crowley’s warnings that it was too dangerous. Subsequently, Pache and several porters were killed in an accident, something for which Crowley was widely blamed by the mountaineering community.[60]
Off the top, from the Wikipedia article