Access is via the Soulcem dam. To get there, cross Tarascon-sur-Ariège. Shortly after leaving the town, turn right at the roundabout towards "Auzat / Vicdessos". Cross Auzat, then follow the sign for "Soulcem / Arties / Artigues ..." Continue in the direction of Soulcem. At a bend in the road, you will find directions, but not for "Soulcem": follow "Mounicou". The dam is a few kilometres further on, you can't miss it. Continue along the Étang de Soulcem until you reach the end of the road: a sign will prevent you from going any further.
Chemin des Orris car park
(S/E) Park at the end of the road and start on the track; the path is obvious.
(1) Climb up the hairpin bends. The track splits into two; keep left and follow the hairpin bends. The track is very wide and comfortable; you are now on the Haute Randonnée Pyrénéenne trail
(2) Sign. A few hundred metres further on, there is a sign at the edge of a small bridge. The sign indicates the Étang de Médécourbe on the right, but continue straight ahead to discover two sides of the Orris crossing. The track is very clear and leaves no room for doubt.
(3) Pass a shelter hut and continue onward. You will see switchbacks in the distance. Take these switchbacks.
(4) At the end of the switchbacks, be careful, this is the place you are most likely to miss! At the last switchback turning left, do not continue following the bend (the Haute Randonnée Pyrénéenne continues towards Andorra and the Arcalis ski resort), but go straight ahead. The path is not very easy to see. Follow the markings, which will take you up some slightly steeper sections (with a few places where you will need to use your hands), including some scree, but without any real difficulty. Cross the stream flowing out of the Étang de Médécourbe and you will come to a fork in the path.
(5) Continue climbing for about 2 kilometres, but at the end you will see the Étang de Médécourbe!
(6) Étang de Médécourbe. You are now at the edge of the Étang de Médécourbe, which, for your information, is the southernmost lake in the Soulcem Valley. Enjoy the peace and quiet for a picnic or an impromptu break. The return journey begins by retracing your steps. Continue along the path you came from. In the distance, you will see the hairpin bends you climbed. Return to the previous crossroads.
(5) Descent towards the Chemin des Orris. About 300 metres before reaching the switchbacks, you will see a path leading down to the left. This will take you to the Chemin des Orris (which you left on your right when you continued on the Haute Randonnée Pyrénéenne at the sign on the small bridge).
(2) Follow the track you took on the way there, but in a much more rural setting. Soon you will see red and white GRT62 markings, which you will follow without any difficulty to the Chemin des Orris car park (S/E).