Marcel Ichac accompanied the mountaineer Armand Charlet, in 1943, in the repetition of the first crossing of the Aiguilles du Diable that the guide of the Chamonix valley had made in 1925. A roped party joined on snow and ice the Col du Géant, reached at the Mont-Blanc-du-Tacul stop and on the Col du Diable. The men cross the needles by climbing chimneys, cracks and abseiling walls. They access the eastern slope of the Mont-Blanc massif which offers a panorama of the Grandes Jorasses and Mont-Blanc. Armand Charlet was the first to reach the summits of four needles above 4000 meters: the Devil's Horn, Pointe Chaubert, Pointe Médiane and Pointe Carmen; he also tells how he successfully climbed the furthest, the Isolated. Marcel Ichac shot these scenes as close as possible to his subject, he responded with this film with a “truth” cinema, the principle of which we find in his later productions.

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