The climbing couple Heinz Mariacher and Luisa Iovane abandon their usual winter training spot to go in search of places more conducive to free climbing in Algeria in the Sahara desert, more precisely in the Hoggar massif, which saw pass the cream of world climbing Lionel Terray, Roger Frison-Roche, Lucien Bérardini, Michel Vaucher, Pierre Mazeaud, Guido Monzino, Patrick Edlinger, Patrick Berhault and many others. Their objective, to climb the east face of Garet El Djenoun, 500 m high, failed because the wall was too smooth and the cracks unstable. The journey continues in the Hoggar massif towards other peaks, where they find the climbing conditions they were hoping for. An overhang in the face of Tizouyag Nord will prove to be a major challenge for Heinz Mariacher.