Park in the car park at the end of the tarmac road.
(S/E) Go around the gate and take the path marked in yellow. Follow the yellow trail to a long open space facing Tête Ronde. Cross this space and walk about 20 metres to reach the junction with the path that will be the return route.
(1) Ignore this path and continue straight ahead; the trail is still marked in yellow. At the next fork, keep to the right. Further on, at a long open space, leave the path and turn right to reach a magnificent viewpoint over Marseille.
(2) Return to the marked path until the next fork.
(3) Turn right onto a vehicle track. At the end of the track, what I had taken to be a path (marked with dots on the map) is in fact an old collapsed wall. So it's not very practical for walking but quite useful for finding your way around.
Follow this collapsed wall southwards, then walk into a small valley where you should see the path below. Join this path.
(4) Turn right. After several hairpin bends, take a short detour to the right to the old bauxite mine (aluminium ore). Then return to the path and rejoin the fork you passed at the start.
(1) Turn left and retrace your steps to the car park (S/E).

