Terray. This name sounds like challenge, and shines in the unconscious collective of the mountain dwellers. For all of them, Lionel Terray will always remain the Conqueror of the Useless par excellence. Forty years after the disappearance of this exceptional guide and mountaineer, who was defined "quite simply as a mountain dweller", his companions and the younger generation agreed to evoke its heritage. "The Terray Way" is based on documents of Terray’s time, film extracts and new images.