Biography: Robert Exertier is a high mountain guide at the Écrins guide office, ski instructor at the ESF Puy Saint Vincent, skipper and photographer. Photographer of the majority of the best climbers of the 1980s, he was among those who made climbing visible to the general public at that time, along with other photographers. He lives today between the country of Toulon and that of Vallouise in the Hautes-Alpes.