On the asphalt road you cross the stream and take the path of the Alta Via n. 2 leading into the Valle della Legna. Follow the stream until the entrance to the "path of the ravines". Take the right up to the ruins of Porte (1346 m). Go down to the left along the mule track up to Outre l'Eve (1230 m). You cross the village and continue towards Bormes. We continue walking on the aqueduct interspersed at times by very exposed metal walkways. At the crossroads take path n. 2 leading quickly to Frassiney. After crossing the bridge, follow the path to Trambeser, cross a bridge again, to continue the trail to Pontboset. Refreshment and control point.