Have you ever wondered how a forest is cared for? In Villard-de-Lans, in the heart of the Bois Barbu forest, the Marteloscope offers you a unique experience to discover the secrets of forest management. Created by the Office National des Forêts (ONF), this life-size role-playing game puts you in the shoes of a forest ranger. Learn to identify which trees to cut down and which to keep to ensure the health and sustainability of our forests. It’s a fun and educational activity, ideal for families, groups and all nature lovers who want to understand the ecological challenges facing our region.