Parking above the hamlet of Les Borrys, under large pine trees, on the edge of Chemin du Degoutaou.
Orange signposting
(S/E) With your back to the rubbish bins, turn right onto Chemin du Degoutaou, then a few metres later turn left. Continue along this wide path which climbs gently through olive trees. After the last house, ignore two tracks on the right and continue straight ahead until you see the signpost for "La Reveyrolle".
(1) Leave theGR® trail on your left and continue straight ahead on the track for about 100 metres. Leave theGR® trail on your right and continue climbing straight ahead. A little higher up, join a track coming from the left and continue on the track between the cliffs.
No signposts
(2) When the track makes a hairpin bend to the right, ignore it and continue left (north-west) on the path that climbs up the Vallon du Dégoutau. Pass in front of cistern no. 39 and leave the path on the right that leads to the Vallon du Petit Pierre.
Continue for 600 metres and leave another path on the right towards the Vallon de Fabrisson (not marked on the map).
Pass tank no. 60 and continue uphill for another 600m to reach a large esplanade which marks the end of the path. Admire the view opposite of the cliffs forming a cirque.
Continue and take a stony path that continues into the forest along the bed of a dry stream, where a PVC pipe is connected to fetch water from the spring (when there is any...) and approach a hunter's hut.
(3) Leave the stream bed and turn right just before the hut, trying to see a trail (the path becomes very complicated from here, with few traces and no cairns). A few metres further on, turn right to climb steeply towards the cliff.
Continue climbing, keeping the cliff on your left and trying to stay as close to it as possible.
After 150 metres, look for a chain fixed to the left when the wall becomes less steep.
(4) Cross the 6/8 metres with the help of the chain equipped with small knots that prevent you from slipping. Continue straight ahead and climb the small, easy rocky spur that leads to a ridge. Turn right onto the ridge and take the visible trail that branches off to the right, marked by cairns.
Keep to this track, which is sometimes less visible and not very well marked, heading north towards the unnamed rocky peak and continue to the foot of the peak.
(5) Follow the cairns that go around the rock on the left and then turn right to climb back up to the summit (the trail is not very visible at times, but the main thing is to reach the summit). Once at the top, take a few steps to the right towards the cairn that marks the summit and offers a beautiful view of the Durance Valley.
From the summit, head straight ahead (northeast), keeping the cliffs on your right (be careful), then descend a little, following the cairns (north).
(6) The trail turns right and heads east. It is difficult to follow as it often disappears into the vegetation and the cairns are few and far between... Don't hesitate to push aside branches and bushes to find your way. This section is only about 300m long, then the path becomes more distinct and marked with cairns. It joins a faint trail coming from the right and arrives at two cairns.
(7) Turn left between these two cairns onto another faint trail to pass between two cedar trees. Don't panic if you can't find this fork; there is another one about 300 metres further on to the left.
Continue through the cedars, following the trail as best you can until it joins the Route de la Forêt des Cèdres.
Orange markings
(8) Turn left onto the paved road, which is very comfortable after this hazardous climb, and follow it for about one kilometre, leaving two trails on your right. Look for a large cairn at the side of the road.
No markings
(9) Turn left onto a flat, well-marked section. Pass a beautiful conical cairn and arrive at the Rochers des Onze Heures, which offer a beautiful view.
(10) Continue left on the path that more or less follows the ridge line. Be careful not to go further left on the trail that plunges into the valley. Go to the end of the rocks to get around them, pass a cylindrical marker and turn right to descend on the other side.
The cairns disappear, but continue to the right, following the rocky ridge for a short distance.
(11) A fairly visible trail descends steeply southwards through the holm oaks. When you reach a gentler slope, ignore a path on the right and a trail opposite and head sharply left, looking for a path that follows the contour line. Follow this path, keeping the ridge line on your left, which you will take on the descent.
Once on the ridges, turn right in a southerly direction, heading for a hunter's lookout post. Further down, the path climbs up opposite on a hillock. Stay on the main path, ignoring a trail that branches off to the right (not very visible) towards the Vallon des Conches. Continue for about 1.5 km to reach a platform.
Take the main trail to the right and very quickly turn right at the next fork (not visible on the map at this zoom level). 800 m further down, turn right at the fork and join a path.
Orange signposting
(12) Turn right onto this path and stay on it until you reach cistern no. 64 to rejoin theGR®97.
Orange + red-white markings
Go to the end of the paved area at the cistern and turn right onto the path for 250 m.
Leave the path and turn left onto a stony track that leads to the bottom of a small valley. Continue left for a few metres to reach another junction.
No markings
(13) Leave the markings on your right and continue straight ahead in the valley until you reach a path.
Turn left and at the next junction 200m further on under the oak trees (not visible on the map), continue straight ahead until you find a spring on the right at the edge of the path.
Continue straight ahead along this small stream and join a paved road. Turn left to return to the car park a little further on (S/E).
. We had two moments of hesitation (we didn't even need to play wild boar), but otherwise it was perfect. No problem with the chain, it's fine without it.
Thank you for this fantastic walk! It is certainly not for everyone, but if you are an experienced mountain walker with strong arms (for the 2 chains early on in the walk to get up a vertical cliff of about 3-4 metres) and a GPS guided system on your mobile phone (finding your way is the other main challenge, but no problems with the GPS), you will be fine. We are a couple aged 67 and 70, and we had no problems.