At La Roche-de-Rame, take the track (signposted Le Lauzet) and park in this hamlet.
(S/E) Cross the Torrent de Bouchouse on the footbridge and immediately turn left onto the wide track leading to the ruins of Le Giet, as marked on the map, which are now beautiful chalets. Continue along this track, ignoring the wide path on the right, to reach the Rocher Rouge crossroads.
(1) Take the beautiful path on the right (signposted Lac de l'Ascension). Quickly begin a steep descent ending at the crossroads of the path leading up to La Roche-de-Rame, at a place called La Chapelle.
(2) Continue straight ahead and then tackle a long, dry but pleasant climb away from the right bank of the Torrent de l'Ascension. Pass a very pleasant rocky outcrop to reach the Chalet de l'Ausselard or Alpavin.
(3) Continue the climb, crossing a few mini sharp limestone pavements to reach the large mountain pasture before the lake, then climb the last hill to reach Lac de l'Ascension.
(4) Continue along the only visible path, then reach the two other lakes: first the Escur and further on the Petit Lac Escur. Further south, begin the climb up the clearly visible small pass Collet du Peyron and reach the pass.
(5) Begin the descent with caution as the slope is relatively steep and the small stones covering the ground can cause falls. After a rocky section, reach the mountain pasture where the path becomes much more pleasant. You will come to a crossroads.
(6) Take the path on the left that remains in the mountain pasture; it is marked with cairns. You will reach the edge of the Font des Ardouis ravine. Continue to the left of this ravine, following the cairns and the very discreet yellow markings. You will then enter the forest, where the path (which is rarely used) becomes less obvious. Keep an eye out for the cairns to find your way. You will come to a yellow arrow on a rock (this arrow points upwards).
(7) Turn right, find a yellow mark on a stone, continue on level ground to find a good path marked with fluorescent orange markings (trail-type markings). Stay on this good path to reach the ruins of Les Ducs (these are real ruins).
(8) Continue downhill, cross the Torrent de Bouchouse, and join the track leading to the hamlet of Cougnet.
(9) Take it on the right to reach the hamlet of Lauzet and the car park (S/E)