Park in the car park at the Poses dam next to the fish pass.
(S/E) Cross the dam to reach the other side of the Seine.
Turn right, then take the road on the left that leads to the Route d'Amfreville sous les Monts.
(1) Cross the D19, Route du Val Pitan, with great caution and climb the hiking trail opposite.
Continue to the viewpoint, which offers a view of the entire Seine valley. The path runs alongside the stone wall of an old retirement home, then take the paved road entering the forest. Continue straight ahead on this road (Route des Deux Amants) until you reach a wide path that branches off to the right.
(2) Take this path and continue until you reach a path that descends to the right (GR®2).
(3) Take this path, which descends for about 300 metres to some metal barriers, then continue along the hillside, where you can admire the superb landscape on a clear, sunny day. Return to the crossroads you passed on the way there.
(1) Turn left and follow the same path you took on the way there to reach the car park at the Poses Dam (S/E).
