Mont des Avaloirs

The mountain of Avaloirs in Mayenne reaches an elevation of 1,368 feet (417 metres) and is the highest point in the Armorican Massif. Uplands include the hills of Arrée in Finistère and Côtes-d’Armor and Mené in Côtes-d’Armor. The basin of Châteaulin occupies much of Finistère and is drained…

…massif; its highest point, the Mont des Avaloirs, on the eastern edge of the massif, attains an elevation of 1,368 feet (417 metres). Alternating bands of Paleozoic sediments and granitic rocks give the massif a generally east-west grain, particularly expressed in the headlands and bays of its rugged coast.