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Park at the Pla de la Lau car park.
(S/E) Head towards the Maison du Valier via the maintained path, just to the left of the track, heading south-east. Go round the house and continue along the shaded path on the left bank of the stream, following the signposts towards the Refuge des Estagnous. The path joins the track, which you should follow in the same direction, staying on the left bank of the Ribérot.
(1) At the fork in the road, turn left to cross the stream via two footbridges, and head uphill through the forest to reach a junction at a clearing.
(2) Turn right and cross the Ribérot again to continue along its left bank until you reach the Nerech waterfall.
(3) Cross the stream via a metal footbridge, then continue to the right along the winding path. Carry on to the Caussis hut.
(4) Take the path on the left, still heading towards the Refuge des Estagnous.
(5) At the refuge, carry on straight ahead along the path towards Mont Valier. The gentle slope gives way to a more challenging section leading up to the Col de Faustin, where a view of the Ariège peaks unfolds.
(6) Carry on to the left, leaving the path leading off to the right towards Mont du Petit Valier. Reach the summit.
(7) Return along the same path to the Estagnous refuge.
(5) Turn right onto a path that is not always very visible, but is clearly marked with yellow markings, until you reach the Col de Pécouch.
(8) Head down northwards towards Les Lauzets, following the same path, which remains hard to see due to the rocks but is marked with yellow markings. You’ll reach a scree slope which you’ll need to cross to reach the Étang de Milouga.
(9) Cross the outlet and continue along an easier section to the small Taus hut. From there, climb a few dozen metres to the right and continue north-west to a junction.
(11) Take the path that descends sharply to the left in a series of switchbacks. Pass the path leading to the Aouen hut on your right.
(12) Cross the stream and gradually enter an increasingly dense forest.
(13) Follow the Muscadet stream. At the end of the descent, cross the Ribérot and head back to the Maison du Valier, then to the car park (S/E).
. Personally, I only did it in two days, but it's certainly doable for a hiker who is experienced enough to do >2000m of elevation gain/loss and sets off very early, but it's a very demanding challenge for the vast majority of people.
Visorando Member
Difficult 
Moderate 
