Ancient open cut tungsten mine, working ferberite-bearing quartz veins hosted by micaceous slates. The quartz veins are accompanied by aplite veins carrying cassiterite. Located 3 km ESE of Echassières, near the La Bosse crossing.
Ref.:
J-J. Périchaud: Les Minéraux d'Auvergne, Vol. 1, Clermont-Ferrand (1985)