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Park on Place de Russan or nearby in the car park below.
(S/E) Follow the Grand Rue ( GR63markings) which climbs between the houses. At the end, turn right into Rue du Marellas.
(1) Turn left onto Rue du Réservoir and continue along the weathered rocks ofthe GR®63until you reach a large path.
(2) Turn right and descend to the small yerle. Continue downhill along a path to the Gardon. Here, there is a spectacular view of the cliff pierced by numerous caves where many swallows nest.
(3) Retrace your steps to climb back up to the previous intersection.
(2) Turn right and follow theGR® again. Descend, cross a valley and climb back up.
(4) At the next intersection, turn left with the GR®. Pass above the Grotte de la Trone area (closed by a reinforced door). At a fork, turn right with the GR®. Reach a crossroads (ancient Roman fortification in ruins).
(5) Then turn right and you will soon reach an orientation table.
(6) Continue along the path to the south-east and then due south (discreet green markings). Descend along the old fortifications. A few easy rocky passages (take the left) lead to the vast alluvial area of the Grand Yerle, which is covered with abundant vegetation, including many hundred-year-old white oaks.
(7) At the crossroads, turn left (east) and walk along a large meadow towards the Gardon. You will come to a crossroads with a dirt road. Turn right and follow this road for 500 metres. It leads to a vast meadow where you will see an imposing building on the right, near a well and a small outbuilding. Between the buildings, a dirt road lined with box trees begins, heading west and leading after a few hundred metres to two small buildings near a large oak tree. The Yerle karstic cave, also known as "Aven du Sommier", is located a few dozen metres south-east of the building.
This karstic cave reopened during the 2002 floods and was only mapped in 2019. It is 2,200 metres long and 27 metres deep. Do not venture inside
(8) Continue the circular motion and return to the fork in the path.
(7). It may be wise to mark these two points on the way there (cairn or mobile app). Pass the orientation table and return to the crossroads you took on the way there.
(5) Turn right along the cliff without getting too close to the edge. Watch out for climbing fixtures scattered on the ground. Move away from the cliff to reach a new intersection.
(10) Turn right at the hairpin bend and descend a little to follow the top of the large cliff. After passing the hole and the vaulted shelter, be careful not to miss the path that descends sharply to the right (cairns). The path leads under the large cliff, which you must follow.
(10) Under the hole in the ceiling decorated with numerous quickdraws, turn around (the rest of the path would be tricky). Turn left and return to the crossroads you have already passed twice.
(5) Follow theGR®63north and, taking the same route as on the way out, return to the intersection that led to the Gardon.
(2) Continue straight ahead with the GR®.
(1) Follow Rue du Marellas to the right, then Grand Rue to the left, which leads to Place de Russan (S/E).
Visorando Member
Difficult 
Easy 
