
This sector has been exploited only recently and only a dozen of boulders have been opened, most in the 7th grade. The access is from the equestrian centre (big parking lot after the classical sector of Bois Rond).
| 1 | Didgeridoo 6c (7a) | slightly overhanging / mantle / sitstart | Tony Fouchereau |
| 2 | Didgeridoo droite 6b (6b+) | slightly overhanging / crack / sitstart | Tony Fouchereau |
| 4 | Impitoyable raccourci 6c+ | traverse fltr / slopers / sitstart | François-Xavier Joubert / Gérald Coste |
| 4-8 | Impitoyable par le haut 7a+ | traverse fltr / slopers / sitstart | Jean-Christophe Guibout |
| 4-9 | Impitoyable aller-retour par le haut 7b+ | traverse / slopers / sitstart | Jean-Christophe Guibout |
| on the boulder of Incassable, near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart completely left, traverse to the right on slopers, downclimb 1m after the angle, traverse with top holds in the tunnel up to the big hold and make the back traverse to the starting point. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 5 | Intouchable 7b (7a+) | slightly overhanging / traverse frtl / slopers | François-Xavier Joubert / Tony Fouchereau |
| on the boulder of Incassable, near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart at the angle of Incassable, make a big dyno to a good hold on the left, traverse with top slopers after the tree and exit by a mantle at the end of the left face. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 6 | St Anger 7a+ (7a) | slightly overhanging / dyno / sitstart | Yano Salaün |
| on the boulder of Incassable, near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart at the angle of Incassable (or 1m to the left), make a big dyno to a good hold and exit by a mantle juste after the tree. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 7 | Incassable 7a (6c+) | arete / crimps / dyno | François-Xavier Joubert / Tony Fouchereau |
| on a boulder near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart at the angle, climb that one and dyno for a crimp right hand which has partially broken off. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 7b | Impitoyable 8a (7c+) | traverse fltr / slopers / dyno | Tony Fouchereau |
| on the boulder of Incassable, near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart completely left, traverse to the right on slopers, downclimb at the tree, join the arete with big moves and exit by this one as for Incassable. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 8 | Les Fidèles Cassent Trop 7a (7a+) | traverse fltr / slopers / crimps | Jérémy Lecouvert |
| 9 | Intouchable prolongé 7c (7c+) | traverse frtl / slightly overhanging / slopers | Tony Fouchereau |
| on the boulder of Incassable, near the bottom of the slope, above La Route d'Arbonne à Achères. Sitstart in the tunnel on the right of the second face, traverse with top holds, downclimb at the angle, make a big dyno as for Intouchable, traverse with top slopers after the tree and exit by a mantle at the end of the left face. Access : from the parking lot of the equestrian centre, follow La Route d'Arbonne à Achères for 250m; the boulder is 30m above, shortly after a TMF mark on a tree. | |||
| 14 | La Ligne Verte 4 | wall / sitstart | Filo Benjamin-Nunes / Tony Fouchereau |
| right problem in a small roof above the thalweg. Sitstart on the right between two small boulders and exit in the wall. Access : from the equestrian centre, follow Le Chemin de l'Auberge for 200m, turn right at the first boulders and follow a small path for 300m. The boulder is 30-40m above. | |||
| 14b | La Ligne Verte en traversée 6c+ | traverse fltr / roof / sitstart | Tony Fouchereau |
| in a small roof above the thalweg. Sitstart left at a small prox, traverse to the right in the overhang (back traverse of Les Évadés), join the start of La Ligne Verte and exit by that one. Access : from the equestrian centre, follow Le Chemin de l'Auberge for 200m, turn right at the first boulders and follow a small path for 300m. The boulder is 30-40m above. | |||
| 15 | Les Évadés 6c (7a) | traverse fltr / slopers / roof | Stéphane Carcone / Tony Fouchereau |
| 16 | Les Évadés prolongé 6c (7a) | traverse frtl / roof / slopers | Tony Fouchereau |
| 17 | Éva-Tard 6a | arete / slopers / sitstart | Tony Fouchereau |
| 18 | Avatar 7b | wall / crimps / sitstart | Tony Fouchereau |
| 20 | Les Dents de la Belle-Mer 7a (7a+) | slightly overhanging / pockets / sitstart | Olivier Gagneux / Tony Fouchereau |
| 20b | Les Dents de la Belle-Mer gauche 7b (7b+) | slightly overhanging / pockets / sitstart | Olivier Gagneux / Tony Fouchereau |
| in the overhanging prow to the opposite of Le Grand Requin Blanc, 50m above the boulder of Évadés. Sitstart on the left of the prow with a crimp left hand by convention and exit directly above. Access : from the equestrian centre, follow Le Chemin de l'Auberge for 200m, turn right at the first boulders and follow a small path for 300m. The boulder is near the top of the crest. | |||
| 21 | Les Dents de la Mer 6c (6b+) | prow / slightly overhanging / sitstart | Marc Lehner / Louis Dalençon |
| 23 | Le Requin Marteau 6a | slightly overhanging / mantle / sitstart | Tony Fouchereau |
| left problem in the overhanging prow to the opposite of Les Dents de la Mer, 50m above the boulder of Évadés. Low sitstart in the pit with two good holds and exit directly in the left face. Access : from the equestrian centre, follow Le Chemin de l'Auberge for 200m, turn right at the first boulders and follow a small path for 300m. The boulder is near the top of the crest. | |||
| 24 | Le Requin Lutin 7a+ | prow / mantle / sitstart | Marc Lehner / Louis Dalençon |
| 25 | Le Gand Requin Blanc 7a+ (7b+) | prow / slightly overhanging / sitstart | Marc Lehner / Louis Dalençon |