In the cave with a blue number 3. Start with the two hands on the pedestal, 3m50 from the 'vertical' entrance of the cave, catch the big flake and exit as for Nyctalope. NB: a light is recommended!
In "La Grotte des Barbizonnières" numbered 3 on the blue path, 200m after La Roche Henri Chaput from Barbizon, on the ridge above Multijeux and Lou-Lou.
