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Park in the car park on the right before the motorway interchange when coming from Martigues. Coming from La Couronne, the car park will be on the left after the interchanges.
(S/E) From the car park, take the path up towards the mill. Turn right before you reach it.
(1) Ignore the track on the left, which will be the return route, and follow the DFCI track (barrier L23) on your right towards the military structures, including the Cavalas battery. Follow the DFCI track from Vallon de la Brègue towards Les Laurons.
(2) At the DFCI L1 barrier, take the path on your right and continue to the tarmac road (Chemin de Bonnieu). Turn right and continue for about 20 metres.
(3) Cross the road carefully and take the path on your left through the woods towards the Laurons blockhouse. Then turn left and follow the coastal path to the Bonnieu Nord car park. Walk along the car park on your left until you reach the right-hand bend.
(4) Take the track on the left and continue straight ahead, heading south.
(5) Continue straight ahead, ignoring the track on your right. A little further on, ignore the track that also starts on the right and continue for about 100 metres to reach the Bonnieu casemate.
(6) Take the path on the left to enter the site and walk around the bunker. Then take the path on your right marked in blue and continue to a crossroads.
(7) Follow the track on the left until you reach a triangular crossroads at the old water treatment plant.
(8) Go around the station by taking the path on the left. Then turn right and take the path lined with ruts in places, which leads to the old Arnette semaphore station. Then turn left and continue straight ahead on the path marked in blue, towards the railway line.
(9) Stay on the main path and follow it to your right, forming a loop. Take the first path on the left, which further on forms a U-shape, so that you are walking alongside the railway line. Here you will see the quarry faces of the old Soubrats quarries and some drystone shelters.
(10) Turn left to cross the small bridge over the railway line towards Vallon de la Marrane. At the third crossroads, follow the dead-end road on the right, then turn right again before the next "dead-end" sign. Continue straight ahead towards the Auffans quarry and its quarry faces.
(11) Go straight ahead, then turn left onto the path. At the end of the path, turn left and continue straight ahead until you reach the crossroads near the mill.
(1) Continue straight ahead and slightly to the right, leaving the mill on your right and returning to the car park where you started (S/E).
We are delighted to read that you enjoyed this part of Martigues and its historical remains. We look forward to seeing you again on another trail. See you soon!
Visorando member
Easy 
Tourist office
Difficult 
