(S/E) From the water tower, head towards Cologne and quickly turn right onto a tarmac road that leads to Cap de la Coste. The road turns into a dirt track and descends into the Gimone valley.
(1) Pass the abandoned En Savardan mill, cross the Gimone and reach the small road (D207). Cross the road and continue eastwards along a tarmac road through a fairly wooded area. Ignore an intersection on the left.
(2) At the next junction at a place called Le Talabart, turn right at 180°. Reach Saint-Orens and cross it.
(3) Pass by the church. After a nice descent, rejoin the D207. Follow it to the left for about 100 metres, then turn right, following the signs indicating a bridge over the Gimone river.
(4) Follow the left bank of the river, taking care not to disturb any crops. Make two 100-metre detours to cross two parallel ditches. Return to the left bank in an ash tree wood.
(5) At the intersection of Chemin de la Cardine and Chemin des Barthes, take the latter on the right. This path climbs gently and, after crossing and following the route of the old railway line, passes close to Cap de la Coste, keeping to the left.
(6) Continue straight ahead to follow the path that leads back to Mauvezin, arrive at the road and turn right to reach the water tower (S/E).