Tucked away in a quiet corner of the forest, this large bouldering area is scattered with widely spread boulders, some of which may remain hidden under a thick blanket of vegetation. Its relative obscurity has helped preserve the raw, unpolished nature of the holds, offering climbers the chance to experience some truly spectacular problems—like the standout line San Ku Kai.

The area is best suited for advanced climbers, with most routes falling in the 6 and 7 grade range. While some blocs are challenging to access, the reward is well worth the effort: isolated stones with untouched textures and lines that feel wild and fresh.

Historically, a few confidential problems were quietly opened by Olivier Penel and his circle of close friends. However, the majority of the boulders were brushed and brought to life by Tony Fouchereau between 2018 and 2020. His efforts helped shape this area into what it is today.

Please be mindful and respectful of the engravings found on certain boulders—some are historical and should not be touched, especially while climbing.

Access is straightforward: a short walk from the nearby parking area leads you straight into the heart of this hidden gem.

Beautiful and labyrinthine area with a lot of nice picknick spots. Parking is close by or you'll arrive by train - station in Bois-le-Roi with a 30 minutes walk. Can get busy but because the area is quite large and diverse it does not feel crowded.