Start at the first bend on the right from Aulus-les-Bains towards the Col de Latrape via the D8f.
(S/E) Take the track marked with a sign for Cascade d'Ars. The path climbs gently under the forest canopy.
(1) Continue straight ahead, leaving the path that climbs towards the Fouillet waterfall on your right.
Red and white markings for theGR®10
(2) Follow theGR® 10 coming from the left. The track then becomes a well-marked, easy path.
(3) Cross the Ars river on the Pont d'Artigous bridge. The path climbs through the forest with a few hairpin bends and the view opens up onto the Cascade d'Ars waterfall. It is possible to reach the foot of the widest part of the waterfall by leaving the GR® path.
The well-marked trail climbs steeply with a few switchbacks.
(4) At the waterfall viewpoint, the trail levels out and descends to a flat area where the Ars River meanders.
(5) Continue a few metres to the next intersection.
Yellow markings
(6) Leave theGR® 10 and follow a small path marked in yellow to the left. Go up the right bank of the Ars river, passing above the Étang de Cabadas.
(7) Continue following the sometimes discreet markings.
(8) At La Pitrade, cross the Ars river on a metal footbridge located a few metres from the Étang de las Touetos spillway. The trail is still marked in yellow and continues south-west.
(9) Cross a small stream a few metres downstream from the Hille de l'Étang. The trail crosses a few rocky outcrops before approaching the pond. Pass under a rocky outcrop by walking on the boulders in the pond.
No markings
(10) At the intersection towards the Orri du Turon d'Ars, take the path on the left towards the Ars river, which you cross via a footbridge, and pass close to a hut.
The path initially runs along the right bank of the Ars river before crossing it again to reach the left bank. Arrive at the Étang de la Hille de la Lauze.
(11) Return via the same route to the bend in the road at Col de Latrape (S/E).