Moulin du Tertre
MonumentHidden Treasure
Moulin du Tertre, located in Mont-Dol (Département 35), is a medieval landmark built in the Middle Ages. The monument is currently closed to visitors.
Key facts
- Type
- autre
- Period
- Medieval (11th-15th century)
- Location
- Mont-Dol, Département 35, Bretagne
- Visit
- Closed to visitors
- GPS
- 48.5717, -1.7689
- Mérimée Reference
- PA00089343
Standing on the hilltop of Mont-Dol since 1843, this Breton granite tower mill has kept its complete mechanism intact - millstones, bluttery, capstan - a living witness to milling in Ille-et-Vilaine.
History
At the top of the mythical mound of Mont-Dol, a rocky spur emerging from the marshy plain of the Marais de Dol, the Moulin du Tertre stands out as one of the most evocative silhouettes in Ille-et-Vilaine. Built in 1843 from the dark granite typical of the Armorican massif, this tower mill with cross-beamed wings elegantly embodies the Breton milling tradition of the 19th century, when the wind from the Bay of Mont-Saint-Michel turned dozens of mills on the heights of the region. What really sets the Moulin du Tertre apart is the exceptional completeness of its interior fittings. Where most old mills are now nothing more than empty shells, this one retains all its original machinery: two pairs of millstones, a sifting mill to sift the flour, a winnowing mill to winnow the grain and the capstan to operate the pivoting roof. It's a living museum of flour milling, from floor to roof. The visit is both a sensory and historical experience. Walking through the different levels of the granite tower, visitors discover not only the wooden and cast-iron mechanisms of the 19th-century miller, but also the traces of the adaptation to the steam engine that extended the life of the mill well into the wind age. The Nacivet Duillon two-cylinder engine, installed around 1929, bears witness to the ingenuity of millers in maintaining their business in the face of modernisation. The setting is not to be outdone. The Butte de Mont-Dol, a prehistoric site steeped in archangelic legends where local tradition sees the scene of a battle between Saint Michael and the Devil, offers a breathtaking panorama of the Bay of Mont-Saint-Michel, the polders and the scattered bell towers of inland Brittany from the mill's outskirts. A place where industrial heritage and mythical landscape come together with rare intensity.
Architecture
The Moulin du Tertre belongs to the type known as "tower mill" or "fixed mill with rotating cap", the architectural form most widespread in Brittany and the Greater West from the 18th century onwards. Its cylindrical tower, built on several levels, is made of carefully assembled Breton granite, giving the whole structure a robust, compact silhouette that is characteristic of Armorican mills. The roof, or "cap", is made from chestnut shingles - a wood that is naturally resistant to the damp Breton climate - forming a domed cap that pivots on a top runway to direct the wings into the wind. The wings are of the cross-beam type, a traditional system in which wooden battens perpendicular to the sail allow the wind resistance to be adjusted. The main shaft, made of solid oak, passes through the tower and transmits the driving force to the inner vertical shaft via a toothed paddle wheel, a gearing system typical of pre-industrial milling. The two pairs of stone millstones - probably made of local sandstone or quartz - are arranged on the main working level, while the sieve mill, the tarare and the capstan occupy the lower floors, carrying out the entire process of transforming grain into flour. The addition of the steam engine, followed by the Nacivet Duillon two-cylinder engine, required alterations to be made to the base of the tower or in an adjoining lean-to, the architectural traces of which bear witness to the gradual hybridization of energy sources. The quality of the granite used and the solidity of the masonry explain the generally good state of conservation of the building, more than 170 years after its construction.
Related Figures
Les meuniers du Tertre (XIXe siècle) — exploitants successifs du moulin de 1843 à 1954, dont les noms exacts restent à documenter par les archives départementales d'Ille-et-VilaineLes ingénieurs Nacivet et Duillon — concepteurs du moteur à deux cylindres installé en 1929, représentants de la modernisation des moulins ruraux français dans l'entre-deux-guerresSaint Michel (figure légendaire) — archange dont le combat mythique contre le diable sur la butte de Mont-Dol constitue le fond légendaire du site depuis le Moyen ÂgeLes commissaires aux Monuments Historiques (1977) — responsables de l'inscription officielle du moulin, reconnaissant son intérêt patrimonial exceptionnel
Tags
Nearby castles
Frequently Asked Questions
Where is Moulin du Tertre located?
Moulin du Tertre is located in Mont-Dol, Département 35 department, Bretagne region, France.
When was Moulin du Tertre built?
Moulin du Tertre dates back to a period built in the Middle Ages (11th-15th century).
Is Moulin du Tertre open to visitors?
Moulin du Tertre is currently closed to visitors.
