1967: Two of the world's best climbers, Yvon Chouinard and Royal Robbins, tackle the west face of Sentinel Rock, an iconic 2,100-meter granite peak located in Yosemite National Park, considered one of the most difficult in the world. The film's atmosphere is immersive, driven by a sober narrative that highlights the intimate relationship between man and the wall. The technical difficulty of the route, the prolonged physical effort, and the isolation reinforce the heroic dimension of this ascent. The documentary also reveals the essential solidarity between the climbers: each progression requires rigor, inventiveness, and total trust in both the equipment and the partner. This film is considered a benchmark in the history of mountain cinema. It testifies to the pioneering spirit of the era and the evolution of climbing techniques, perfectly illustrating the transition to a more athletic and thoughtful approach to large rock faces.