The Pointe du Grouin is a rocky promontory jutting further out to sea than any other headland in Ille-et-Vilaine. To the east, it provides a breathtaking view of Mont Saint-Michel Bay and the Channel coast; to the west lies a succession of shorelines and capes. A conservation agency, the Société pour l'Etude et la Protection de la nature en Bretagne, offers activities and events based on the natural environment during the summer season and gives visitors a chance to observe birds nesting on...