Located in a beech forest in the heart of the forest of Lyons, its ruins still lie in a bucolic setting that invites an almost mystical ride as these places are full of history.
Built in 1134 at the request of Henry Beauclerc 1st, first Duke of Normandy, King of England and fourth son of William the Conqueror, it derives its name from the Latin "Mortum-mare" which means "Sea-Dead", due the huge swamp that inundated the region once. Since its founding in the 12th century, the Abbey is shared between several worlds. The water course, the land from which it draws its substance, the forest that encloses its splendor, and finally the sky, which it is dedicated. The venue was chosen for its calm conducive to rest and prayer. Affiliated to the Cistercian order (it was the first dated in Normandy), she lived completely self-sufficient thanks to the loft pigeons, lamprey, perch and tench fish ponds, with wine and honey produced by the monks.