The Col des Rochilles is an off-road col in the Mont Thabor region of the Alps some kilometres south-west of the Mont Thabor summit itself. This region is just on the border with Italy where the Frejus tunnel exits at Bardonecchia. Alternatively you can think of it as some kilometres east of 1’Alpe d’Huez and les Deux Alpes. Ride 1 - Circular route around the Rochers de la Grande Pare [Map IGN 3435ET or 3535OT, this being in the area of overlap of the two maps.] This ride starts at the bottom of the north side of the Col du Galibier