From the parking lot of La Croix Saint-Jérôme, follow Le Chemin de la Vallée Close for 300m. The small sector of Rocher des Souris is just before the Chemin de la Plaine de Jean des Vignes (the big boulders of "Yogi" and "Extraction Terrestre" can easily be seen on the right).
| 1 | Oxygène 7b | traverse fltr | - |
| 2 | Oxygène retour 7a+ | traverse frtl | - |
| 2b | Oxygène Actif 7c | traverse | Bernard Théret |
| 4 | Yoga 7a (6c) | roof / sitstart | Pepito |
| 4b | Yoga en traversée 7b+ (7c) | overhang / traverse frtl / sitstart | Tony Fouchereau |
| 5 | Yogi 7b | roof | Christophe Laumone |
| 5b | Yoguignol 7b | roof | François-Xavier Joubert / Laurent Raviot |
| 6 | Le Surplomb Rouge 6a (6a+) | overhang | - |
| 7 | - 5+ | overhang | - |
| 8 | - 5+ | wall / arete | - |
| 10 | Extraction Terrestre 7a+ | roof / prow / sitstart | Bernard Théret |
| 10b | Vis-à-Vis 7a | sitstart / pockets / overhang | Pepito |
| 10c | Extraction Lunaire 6b | roof / pockets / sitstart | - |
| 11 | Extraction Martienne 6b | roof | Loïc de Saint Etienne / Guillaume Mainbourg |
| on the left face of the boulder of Extraction Terrestre. Start under the roof and exit at the top of that one. | |||
| 12 | Prouesse 7b (7b+) | prow | Patrick Sercki / Jo Montchaussé |
| 14 | Téléphone Maison 7a+ | traverse frtl / pockets / slopers | Bernard Théret |
| 16 | Musculus 6c (7a) | traverse fltr / mantle / sitstart | Tony Fouchereau / Pierre Délas |
| on a boulder with a small tunnel, along the 25 Bosses path, 30m above Prouesse. Sitstart on the left face, traverse on slopers, pass through the taunnel (without touching the back boulder) and exit by a mantle just after. | |||
| 17 | Ratatouille 7b (7c) | roof / sitstart | Tony Fouchereau |
| evident roof with marbled holds, along the 25 Bosses path, 30m above the tunnel of Musculus. Sitstart on the right with an ear-shaped hold right hand and a vertical hold left hand, dyno to the left of the roof and exit above with a good pocket. | |||
| 18 | Le Petit Velociraptor 6c | wall | - |
| 19 | Clic-Clac 5- (5) | slightly overhanging / sitstart | - |
| sitstart in the overhang to the right of Kric-Crak, and exit directly. | |||
| 20 | Kric-Crak 7b | prow | Philippe Dumez |
| 21 | Velociraptor 7c | slightly overhanging / prow / dyno | François-Xavier Joubert / Frédéric Bouyge |
| 21b | Velociraptor en traversée 7b+ (7c) | slightly overhanging / traverse fltr | Tony Fouchereau |
| evident overhang to the left of the 25 Bosses path, 20m from Ratatouille in the North face. Start to the left of the overhang as for Velociraptor but after the big dyno, downclimb up to the sitstart of Kric-Crak, pass the angle and exit above in Le Petit Velociraptor (without using the small boulders on the ground). | |||
| 22 | L'Homme Volant 7c | arete / slopers / sitstart | Pierre Délas / Cédric Chambellan |
| 23 | La Souris Volante 5 | arete | - |
| left arete on the boulder of L'Homme Volant, in the upper part of the sector. | |||
| 24 | Un Trou de Souris 6b (6a) | roof / sitstart / slopers | Tony Fouchereau |
| several meters underneath L'Homme Volant, in the upper part of the sector. | |||
| 26 | La Petite Souris 3 | slab | - |
| right problem on the highest boulder up the slope, above Kric-Crak. | |||
| 27 | La Dalle centrale des Souris 5+ | slab | - |
| central slab on the highest boulder up the slope, above Kric-Crak. | |||
| 28 | La Grande Dalle des Souris 6c | slab / toprope | Philippe Dumez |
| high slab, starting at a big jug, on the highest boulder up the slope, above Kric-Crak. | |||
| 29 | L'Angle des Souris 6b | arete / slab / expo | - |
| angle with a tree on the highest boulder up the slope, above Kric-Crak. | |||
| 30 | - 6a | wall | - |
| right problem on the West face of the highest boulder up the slope, above Kric-Crak. | |||
| 31 | - 5 | wall | - |
| central problem on the West face of the highest boulder up the slope, above Kric-Crak. | |||
| 32 | - 3 | wall | - |
| left problem on the West face of the highest boulder up the slope, above Kric-Crak. | |||
| 34 | La Souris Transgénique 7b (7b+) | traverse frtl / wall / expo | Tony Fouchereau |
| on the boulder to the opposite of La Souris Mécanique, between L'Homme Volant and La Souris Verte. Sitstart on the right of the boulder, low traverse above the corridor and exit completely left in T'Inquiète. | |||
| 35 | - 4 | wall | - |
| right problem on the boulder to the opposite of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 36 | - 4+ | wall | - |
| second problem from the right on the boulder to the opposite of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 37 | - 5 | wall | Philippe Dumez |
| direct wall on the boulder to the opposite of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 38 | T'Inquiète 6c (6c+) | wall / arete / expo | Philippe Dumez |
| left angle on the boulder to the opposite of La Souris Mécanique, between L'Homme Volant and La Souris Verte. Start at the tree and exit directly without touching that one. | |||
| 40 | La Souris Mécanique (sortie directe) 7a (6c+) | traverse fltr / pockets / wall | Tony Fouchereau |
| on a long boulder with characteristic wide holes, between L'Homme Volant and La Souris Verte. Sitstart at the left arete, traverse on big pockets and slopers and exit before the right angle in La Directe. | |||
| 40b | La Souris Mécanique 6c (6b+) | traverse fltr / pockets | Tony Fouchereau |
| on a long boulder with characteristic wide holes, between L'Homme Volant and La Souris Verte. Sitstart at the left arete, traverse on big pockets and slopers and exit after the right angle in L'Envers de la Mécanique. | |||
| 41 | - 5 | arete | - |
| left angle on the long boulder with characteristic wide holes of La Souris Mécanique, underneath L'Homme Volant. | |||
| 42 | La Fissure Mécanique 4+ | crack | Philippe Dumez |
| left problem on the principal face of the long boulder with characteristic wide holes of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 43 | Tourne à Gauche 6b | wall | Philippe Dumez |
| central problem on the principal face of the long boulder with characteristic wide holes of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 44 | La Directe 6c (6a+) | wall | Fabrice Frébourg |
| right problem on the principal face of the long boulder with characteristic wide holes of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 45 | L'Envers de la Mécanique 4 | arete | - |
| right angle on the long boulder with characteristic wide holes of La Souris Mécanique, between L'Homme Volant and La Souris Verte. | |||
| 46 | Mouse Moussue 2+ | slab | - |
| warming-up problem on the East face of the boulder to the opposite of La Souris Verte. | |||
| 47 | La Flèche Orange 3 | slab | - |
| slab to the opposite of La Souris Verte. | |||
| 48 | La Souris Verte 7a | prow / sitstart / expo | Philippe Dumez |
| 49 | Face de Rat 6c | wall / toprope | Philippe Dumez |
| just left of La Souris Verte. | |||
| 50 | Mistoufly 7a | wall / dyno | Philippe Dumez |
| to the left of La Souris Verte. Dyno to the big jug and exit on the left. | |||
| 50b | Mistoufly droite 7a+ | wall / dyno / toprope | Philippe Dumez |
| to the left of La Souris Verte. Dyno to the big jug and exit in Face de Rat. | |||
| 51 | - 3+ | wall | - |
| left problem on the boulder of La Souris Verte. Start at big jug and exit directly. | |||
| 52 | L'Arête Sud 6c | arete / toprope | Philippe Dumez |
| left arete on the boulder of La Souris Verte. | |||
| 53 | La Souris Jaune 3 | slab | - |
| on the West face of the boulder of La Souris Verte. | |||
| 54 | Le Trou de Derrière 6c (7a) | slightly overhanging / arete / dyno | Julien Gasc / Pierre Délas |
| on the back face of the boulder to the left of La Souris Verte. Standing start in a pit in the middle of the overhang with the two hands on a moon-shaped hold, take the arete and exit without touching the boulders on the left. | |||
| 55 | Le Souriceau 4 | slab | - |
| tiny slab to the opposite of L'Arête Sud, to the left of L'Arête Sud. | |||
| 56 | Le Poing Levé de Tommie Smith 7b (7b+) | slightly overhanging / expo | François-Xavier Joubert / Tony Fouchereau |
| evident overhang to the right and underneath Trou de Derrière. Le Trou de Derrière. Standing start with a good pocket left hand and a crimp right hand, traverse slightly to the right and exit above with another good pocket. | |||
| 57 | Le Poing Levé de Tommie Smith assis 7b+ (7c) | slightly overhanging / expo / sitstart | François-Xavier Joubert / Tony Fouchereau |
| evident overhang to the right and underneath Trou de Derrière. Le Trou de Derrière. Sitstart (without crash-pad) to the left of the boulder, and exit as for Le Poing Levé de Tommie Smith. | |||
| 58 | Bernard 6c (6b+) | slightly overhanging | François-Xavier Joubert / Tony Fouchereau |
| left problem on a boulder 20m underneath Le Poing Levé de Tommie Smith, above Le Chemin de la Plaine de Jean des Vignes. Standing start to the left and exit to the left of the arete without touching the back boulder. | |||
| 59 | Bianca 7b (7a+) | slightly overhanging / mantle / slab | Tony Fouchereau |
| right problem on a boulder 20m underneath Le Poing Levé de Tommie Smith, above Le Chemin de la Plaine de Jean des Vignes. Standing start in the belly to the right of Bernard and exit in the slab above. | |||
| 60 | Le Bracelet Magique 6b (6c) | traverse frtl / mantle / sitstart | - |
| on the backside of a boulder 10m above le Chemin de la Plaine de Jean des Vignes. Sitstart at the right angle with a crimp right hand, traverse on the ledge using a characteristic pierced pocket and exit by a mantle on the left angle. | |||
Outside the topo | |||
| Prouesse assis 7c+ | prow / sitstart | Laurent Vigouroux | |
| Squeeze Me 6c | prow / pinches / slopers | Ivan Moreels | |
| Squeeze Me assis 6c+ | prow / pinches / sitstart | Ivan Moreels | |
| Fokechnikov 6c | dyno | Julien Gasc / Marc Lehner | |
| Mucho Bueno 6b (6c) | arete | Philippe Dumez / Alain Suidi | |
| exit crack of La Malle des Indes, 100m after Squeeze Me, up the slope. | |||
| Mucho Bueno assis 7a | crack / sitstart | Philippe Dumez | |
| La Malle des Indes 7a+ (7b) | crack / underclings / traverse frtl | Bernard Théret | |
| Hueco Trip 6c (6c+) | prow / overhang / sitstart | François-Xavier Joubert / Thierry Vasseur | |
| on an isolated boulder in the West face, 20m underneath the top of the hill, on the left and under Hueco Camp. Access : follow the 25 Bosses path up to the top of the hill; the boulder is 20m underneath a characteristic roof protected by a fence. | |||
| Hueco Camp 7a | overhang / sitstart / expo | Elric Besnier / Gérald Coste | |