A 1959 documentary about climbing in the Hoggar Mountains of Algeria. For the first time, a mountain expedition was organized for 60 young aspiring climbers, accompanied by renowned mountaineers such as Lionel Terray, Lucien Bérardini, Maurice Herzog, and Jean-Paul Gardinier. In two weeks, dozens of new routes, often extremely difficult, were established. Jacques Ertaud's camera followed the climbers through all the challenging sections of the first ascent of the south spur of Assekrem.