The Giraumont covered passage or Ganguille dolmen is a covered passage in Saint-Marcel. The Dolmen dates back to about 2000 BC. It is about 5 metres long with three sandstone slabs weighing as much as 10 tonnes covering two chambers that are supported by dressed-stone walls. An adventitious Gallic tomb was subsequently placed on its outer sidewall.
Randonnée possible facile d'accès.
Parking à proximité ( 200 m)