This is part of Brittany's Sentier de Douaniers, a trail created at the French Revolution to guard again smuggling which hugs the entire coast of Brittany for 800 miles, from Saint-Malo in the north to Saint-Nazaire in the south. The very walkable 3-mile stretch between Perros-Guirec and Ploumanac'h along the Pink Granite Coast, so called ...