The starting point is located in the bend at the entrance to the Colongues railway tunnel (on the right when coming from Cassis on the D1 towards Les Janots). Several parking spaces are available at the entrance to the track.
(S/E) Take a wide track heading east, which is concrete at the start. It gradually turns north-east, passing over the Colongues Tunnel towards Mont Gibaou.
(1) After about 400m, leave the track at a rock marked with an orange cross and turn right onto the rutted path descending south-east.
After 80m, take a path climbing to the left (marked with orange and blue dots) which joins a track after 300m. Follow this track on your right for about 200m until you reach a reservoir.
(2) Shortly before the reservoir, leave the track and take a path on the right that descends to the north-east (orange marker) and then gradually turns north as it climbs. This path is steep in places (there are old ropes) but is not exposed and you will not need to use your hands.
Follow it to an area of sharp limestone pavement and continue straight ahead north (cairns, orange markers) to the summit of Mont Gibaou. Continue following the trail, skirting the ridge eastwards and gradually descending to a small pass.
(3) Take a path on the right that descends slightly southwards for 50m. Leave it and follow a path on the left that climbs slightly to a crossroads bordered by a large pine tree.
Option: Take the path (west) along the cliff to a small cave about 2m high where a plaque has been placed in honour of the poet Frédéric Mistral and his character Calendal, who was in love with the fairy Estérelle. Then retrace your steps.
(4) Take the path on the right, marked with blue dots and cairns, and join a sharp limestone pavement which you climb up to the summit of Baou Redon, marked by a bamboo pole.
Continue along the path towards the east until you reach a small pass (sky blue dot on the left at the edge of the cliff and dark blue dot on the right on the path).
(5) Descend via a short, easy climb down the rocky outcrop about 3 m high bordering the north of the small pass. You will reach a path at the edge of the cliff, which you follow to the right (east) for about ten metres until you reach a cairn marking the start of a path descending to the left (north). Follow this very steep dirt path to the trail below Baou Redon, which you follow to the right (east).
Alternative route:
If you do not wish to take this route, follow the same path you took on the way up in the opposite direction until you reach the previous crossroads (4).
Turn right, heading north-east, and continue on the path below the Baou Redon promontory.
Follow this path along the edge of the cliff above Roquefort-La-Bédoule until you reach a forest track (there are remains of a threshing area). Turn right and follow the forest track south-southwest towards Cassis. About 450m after the track, on the right, the Source de la Ratataigne flows intermittently during wet periods.
After about 1.3 km, leave the track and take a path on the right to join a track that you follow on the right (sign on a tree on the right). Follow this track, pass the entrance to a property on the right (Clos de la Renardière) and continue for about 150 m.
(6) Leave the track and take a path on the right heading west (cairn, orange signpost). Follow this narrow path (not shown on the iGN map) which descends gradually to join a path at the entrance to a tunnel under the railway line.
Optional access to the Grotte des Janots:
Take the path opposite, climbing the railway embankment for about 20m (vertical steel stake) and continue to the right for about ten metres until you reach the entrance to the Grotte des Janots (which can be visited). Descend by the same route to the tunnel entrance.
Take the tunnel to pass under the railway line and, after about 20 metres, take the path up to the right until you reach a concrete hydraulic structure (orange signpost). Follow the path or forest track along the canal.
(7) After about 400 metres, at a manhole marked with an orange dot and an orange direction change sign, turn right into a recently cut path that climbs to the right (north-west), marked with orange dots, until you reach a junction, then continue straight ahead, slightly downhill, following the orange dots to the car park (S/E).
