For 10 points, identify this northern region of France.
This region contains a fortified tidal island named for Saint Michael, as well as granite cliffs in the west and limestone cliffs in the east. Its highest point is the massif Signal d'Ecouves. It is divided into an upper and lower portions, and is famous for its distinctive bocages, a feature shared by Devon, consisting of mixed pasture and woodland. Situated next to Picardy, cities in this region include Cherbourg and Caen, while its largest city is Rouen on the Seine River. Settled by Vikings, it borders a chalk plateau that extends to Dover across the English Channel. For 10 points, identify this northern region of France.
This region contains a fortified tidal island named for Saint Michael, as well as granite cliffs in the west and limestone cliffs in the east.
{Normandy}