From Tarascon-sur-Ariège, take the RN20 to Luzenac. Head towards Lordat, then follow the D20 (Route de la Corniche) towards Axiat, then Appy. Park in the car park above the village.
The route is entirely on trails, most of which are marked, except between the fork and the Col de Girabal. However, this section does not present any major difficulties in terms of orientation.
(S/E) From the car park, head north-east along a yellow-marked path. Cross the Ruisseau de Camelong stream. Pass under the power lines. Between the two power lines, ignore the path on the left leading to the climbing site.
(1) Leave the path on the left, which winds upwards and joins the Étang d'Appy.
Continue straight ahead on an unmarked path. It crosses a beech forest and joins the Girabal stream, which it crosses at the edge of the forest. Enter the small plateau of Jasse de Sédars. Cross the Jasse, leaving the hut on your right.
(2) Follow the path that runs alongside the Sauquet stream, passes through a rocky narrows and climbs up a small valley with an imposing rock in the middle. Just above the rock, you will come across some orris (old summer pasture buildings). Continue to the Col de Girabal (sign).
(3) From the pass, turn right onto theGRP® trail, which follows the ridge and climbs steeply to reach the Pic de Saint-Barthélemy (¹).
(4) Descend via the same route to Col de Girabal.
(3) Continue straight ahead, heading west, on theGRP® trail, which follows the ridge and climbs rapidly to a summit at 2,169 metres, then descends to the Col de l'Étang d'Appy (sign).
(5) Turn left onto the well-markedGRP® trail that descends to the lake.
(6) Walk along the left side of the lake, go around the Jasse de l'Étang on the right and continue straight ahead towards the south-west, passing a small pass. The marked trail crosses a plateau and descends, skirting a beech forest on the right, then turns left (south-east) before reaching the fork encountered on the way there.
(1) Return to the car park by following the path you took on the way there to the right until you reach (S/E).
