Park in the last car park at the Saint-Christophe basin on the right of the D543 before the Marseille canal buildings when coming from Rognes.
(S/E) Take the DFCI path in the Ru valley to the electricity pylon.
(1) Leave the DFCI road and take a grassy path on the left that descends towards some ruined buildings and an old reservoir of the Marseille canal.
Pass between the two small reservoirs.
(2) Go back up the clearly visible path that heads left (no markings) towards the old Ponserot spillway.
The path descends gently into the valley before reaching this reservoir.
(3) Turn right onto an unmarked path at the end of the path on the Durance valley and almost at the edge of the Marseille canal (do not confuse it with the Provence canal below).
Take this path, which becomes a track. You will reach the entrance to the Moulestre valley (houses).
(4) Take the tarmac road on the left under the Marseille canal towards the D561.
(5) At the road, turn right (watch out for traffic) until after the bridge over the Provence Canal coming from the Saint-Estève-Janson power station.
(6) Cross the D561 and take the wide road straight ahead towards the banks of the Durance. Do not take the road on the left that runs alongside the Provence Canal. You will arrive at the left bank of the Durance.
(7) Turn left onto the path along the Durance and head towards Janson Castle, the ruins of which can be seen on the left.
(8) When you see the castle at the end of the lake, turn left before reaching the foot of the castle.
Several small paths lead up to the ruins. Take the main path that runs alongside the old enclosure wall and a well.
The path is now in a pine forest between the canal and the Durance.
(9) Cross the D943, taking care of the traffic on this road. The path continues along the edge of the Canal de Provence until you reach an EDF bridge over the spillway, which you can cross (the fencing has been cut).
Continue to the next bridge after Les Gontard.
(10) Cross the canal on the bridge to the D561 and turn right for a few metres. Cross the D561 at the junction with the D66E and take this road until the first path on the left. Follow this road for about 450 metres and turn left onto a small path until you reach a road that joins the D66E at the edge of the St Christophe basin. Cross this road and follow the edge of the basin.
(11) Cross the D66E and follow the edge of the lake, take a small passage over a narrow bridge, then cross the D543 to reach the car park at the Saint-Christophe basin (S/E).
15/05/2024: Route modified in (10) to avoid walking along the D66E.
