15m. The climb on the far, far left of the Montcalm 2 sector (you'll need to climb up though the trees using the rope to find this one). According to what is painted on the rock at the bottom of the climb, go straight up for a 7a route, or take a left diversion for a 6b+ alternative. I've added this route as 7a to be consistent with the description painted at the bottom of the route itself, and also the grade in the French topo, but it will be very obvious to any climber who would attempt a climb of this grade that the 7a 'line' (i.e. straight up through the bolts) is far, far easier than 7a.