The historical duchy of Normandy occupied the lower Seine area, the Pays de Caux and the region to the west through the Pays d'Auge as far as the Cotentin Peninsula. The region is bordered along the northern coasts by the English Channel. There are granite cliffs in the west and limestone cliffs in the east. There are also long stretches of beach in the center of the region. The unique bocage hedges are typical of the western areas of Normandy. The highest point is the Signal d'Écouves at in the Massif armoricain. Normandy is lightly forested. Eure has the most wooded areas with about 20% being forest. The population of Normandy today is around 3.45 million.