The Librairie des Alpes has long been the haunt of mountaineers in the French capital. Its founder, André Wahl, was himself a mountain enthusiast.
His collection of books gave pride of place to the history of the massifs and their conquest by Man. The dozens of photos on display testify to the harsh impact of time, and heat, on the mountain, which previously "was quite white, including summer", but "today is much blacker, because there is no more snow, quite simply"