The Vallée des Rouets (], Valley of Mills) is a part of the valley of the Durolle river, principally situated on the land of Thiers, in the French department of Puy-de-Dôme in the Auvergne-Rhône-Alpes region. The area is known for its long artisanal past, as the inhabitants have made use of the locomotive power of the Durolle River since the Middle Ages. The beginning of the 20th century marked the closure of most of the water-powered mills in the valley in favor of the production of cutlery, mainly situated in the Vallée des Usines (Valley of Factories), located downstream.