Charles Dubouloz spent six days and five nights enduring -30C temperatures as he journeyed up the 4,208-metre-high Grandes Jorasses in the Mont Blanc massif.
Upon reaching the top, the 32-year-old alpinist and mountain guide became the first person to successfully make a solo winter ascent of the north face of the mountain.
Duboulouz took the notorious 'Rolling Stones route' and described the journey as "the culmination of a relentless practice of sport outside since my young years."
To climb Grand Jorasses north face is a challenge reserved for the most expert climbers in the world but to make the attempt during winter and solo? Few have ever dared try.
However, Duboulouz told mountaineering magazine Montagnes, the difficulty was the attraction.
