La carrière de Cerin, ENS de l'Ain

Its lithographic limestone was extracted for many years to be used for stone engraving throughout Europe. In the 20th century, a team of archaeologists revealed a quantity of fossils of all kinds (reptiles, fish, fauna, flora, giant tortoises...) testifying to the very distant past of this tropical lagoon in this corner of the mountain, which is now an integral part of the Bugey massif.

An interpretation trail offers an educational itinerary to discover the natural and historical riches of this site. The Conservatoire des Espaces Naturels de l'Ain offers occasional walks and activities.

The Cerin museum, opposite the quarry entrance, welcomes the public to discover the main geological principles and presents the results of the quarry's archaeological excavations.