Through a circuit of about 5 km along the river or on steep hillsides, we will discover the richness of the local heritage and its renewal. The course is sporty, so it is necessary to provide good hiking shoes. The departure will be at the green space of La Boulaie, at 14:30. We will go back to Mallièvre by Saint-Jacques to La Péraie. We will take a path to the Moulin de La Roche to observe the site, then it will be the Capeleau mill, Grand Moulin, Moulin Neuf where we will cross the bridge. Finally, we will reach the Brocheton, Charbonneau, Froment, Baubry mill with a visit of the mill and a unique observation of its mechanisms renovated by the miller himself! Our guide, Raymond Le Penuizic, will mention the other mills of Thirteen-Vents located downstream, the activities of yesterday, the hydraulic developments.