Go back in time with an exhibition dedicated to prehistory and the history of the Earth presented in the André-Thomas room, in the basement of the library.

Cut flint, minerals, fossils, etc. an exhibition commented by its creator Frédéric Chereau, Cepoy city councillor and history-geography teacher, which brings together several themes:

• The last reindeer hunters of the Upper Palaeolithic through the discoveries made in Cepoy itself,
• The Neolithic «revolution» with the presentation of objects found in the north of Yonne,
• The uses made by humans of mineralogical resources through samples of varied origin
• An introduction to Paleontology thanks to two showcases dedicated to fossils, their formation and their utility in geology
  The tour is suitable for children.