To the west of the hamlet of Climont, going towards Colroy-la-Grande, are the oldest rocks in the Vosges, in the shape of a blade of stones observable at the surface over about 100 meters. These formations of scales belong to an old Precambrian pedestal; they are characterized by the shales of Le Villé dating to over 600 million years in the past. These formations, submitted to intense pressures, friction and crushing by the action of faults, contain gneiss with amphibole and garnet, known as Climont gneiss, but also syenitic granite. These crushed rocks or myelonites witness to an ancient metamorphism which occurred well before the shale deposits of Le Villé.