Conference as part of the programme of the exhibition "Avon de la Seine à la forêt" presented at the Maison dans la Vallée in Avon from 17 September to 17 December 2022.
The numerous small cavities of the rocks of the Fontainebleau massif often present engravings, testimonies of various eras, ranging from prehistory to the present day. Figurative or abstract, these engravings are not always easy to interpret.