The Roof Vercors on Clmb House. Venue in 155 Allée des Deux Soeurs, Zone Diabolo, 26300 Bourg-de-Péage, France, France. The Roof Vercors is a climbing gym in the Diabolo zone of Bourg-de-Péage, between Valence and Grenoble (A49 exit 6), combining climbing for everyone with a b...