Vallée Ronde
This small sector gathers a few problems, half of them lichened (April 2016). Access : from Arbonne, follow the D64 in direction of Achères and park the car near the top of the 17 bends (same parking lot as for Le Bois du Rocher). Follow Le Chemin des Cassis for 300m : the boulders can be found on the left of the path, 200m before the motorway.
Les Deux Requins (retour)
6c+
Jo Montchaussé, Thierry Angot, Pascal Boucherie
traverse frtl, slopers
The Couloir
6a
Bernard Théret
wall
La Murène
7b+
Bernard Théret
traverse fltr, pockets, sitstart
L'Olivia (assis)
5+
François Ghigonis
arete, sitstart
La Pisse du Routier (assis)
6b+
François Ghigonis
arete, slightly overhanging, sitstart
Déva
8b
Christophe Laumone
traverse frtl
Les Deux Requins (aller-retour)
7a+
Jo Montchaussé, Thierry Angot, Pascal Boucherie
traverse fltr, traverse frtl, slopers
Interdit aux Masses
6c
François Ghigonis
arete
The Pente
5+
Bernard Théret
wall, arete
L'Effaceur
6b+
Bernard Théret
traverse fltr, wall
L'Olivia
5
François Ghigonis
arete
L'Olivia (gauche)
6a
François Ghigonis
wall, arete, sitstart
La Pisse du Routier
6b
François Ghigonis, Romain Monnier
arete, slightly overhanging
La Chauffe
4+
Olivia Martel
overhang