The Sargaillouse track.

Before the water tower go down to the left on a dirt road. Continue straight ahead leaving several paths to the left and to the right and, in the descent, take the right-hand path. After crossing a pass in the forest, go up in front staying on the ridge. Then go down for about 600m (approx. 1968.5ft.) by a steep path. Once down the path, turn left on the Sargaillouse track.