Ueli Steck walks the tightrope along the ridgeline that links the Blanche de Peuterey's three summits during his summer voyage across the 4000-meter peaks of the Alps. A noteworthy performance? Without a doubt: climbing each summit in such a short time period will always be physically demanding. Ueli prefers to talk about a dream come true and each incredible moment he experienced up there. The magical journey was unfortunately darkened by the fatal fall of Dutch climber Martjin Seueren, who accompanied Ueli on the Rochefort Ridge traverse. A photo in tribute… Photo : Jon Griffith.