Located at Landéan, in Ille-et-Vilaine, the oppidum du Poulailler is a vestige of the Iron Age today classified as a Historic Monument. Located in the heart of the Fougères forest, this megalith bears witness to a very ancient human occupation on Breton territory.
At the confluence of the Nançon and the Saint-François stream, it is also close to three ancient Roman roads. The oppidum du Poulailler is marked by a double earthen rampart with a wide ditch and by an earth levee.
