Start from the village of Aulus-les-Bains, in the car park of the Résidence des Trois Césars (some spaces are reserved for residents, the others are free).
(S/E) On leaving the car park, turn left and, a few metres further on, enter the park on the left. Cross the park and you will arrive at the Grotte des Sources.
(1) Go round the caves on the left, then take the path that climbs and winds through the forest. Take the path that climbs to the right and join theGRP® trail (marked yellow and red).
(2) At a tree marked in yellow and red, turn right and you will reach the road.
(3) Leave theGRP® and follow this road to the left for 60 m. Cross over and follow the sign for Plateau de Souliou (yellow markings).
(4) Follow the yellow markings to the left for a gentler climb. Reach the top of the climb at a crossroads at an elevation of 1075 metres.
(5) Turn right for 10 m, then left, following the signs for Plateau de Souliou. You will reach a junction with a path.
(6) At the signposts, follow the signs to the right for Jasse du Fouillet, following the red and white markings ofthe GR®10to a Y-junction (elevation 1170 m, Jasse du Fouillet).
(7) Turn right, follow the yellow markings and pass the Cabane de Bazets.
(8) After the hut, follow the track towards the Fouillet Valley. You will reach another Y-junction at an elevation of 990 m in the Fouillet Valley.
(9) Turn left onto theGRP® Aulus (yellow and red markings). A few hundred metres further on, you’ll rejoin the road you passed on the way out. Turn right onto it for about thirty metres.
(3) Cross it and take the path back in the opposite direction to Aulus. Continue to the treetop adventure park and then return to the car park (S/E).