Dolmen de Mané-Groh
MonumentHidden Treasure
Dolmen de Mané-Groh, located in Erdeven (Département 56), is a historic monument. The monument is currently closed to visitors.
Key facts
- Type
- autre
- Location
- Erdeven, Département 56, Bretagne
- Visit
- Closed to visitors
- GPS
- 47.6284, -3.1203
- Mérimée Reference
- PA00091185
Standing on the Breton moor at Erdeven, the Mané-Groh dolmen is a jewel of the Armorican Neolithic: its elongated chamber and imposing orthostats bear witness to five millennia of megalithic know-how.
History
In the heart of the Erdeven region, in the Morbihan region with the highest density of megaliths in the world, the Mané-Groh dolmen emerges from the vegetation like a fragment of eternity. Its Breton name evokes the "hill of the fairies", a reminder of the extent to which these prehistoric structures have nourished the popular imagination of rural communities for centuries. This collective funerary monument belongs to the great megalithic tradition of the Middle Armorican Neolithic, contemporary with the Carnac alignments and the tumuli of the Quiberon peninsula. Its granite slabs, quarried from local outcrops by builders whose technical mastery still astounds us, create an architecture that is both crude and skilfully calculated. The inner chamber, which used to be accessible via an access corridor, was used as a collective burial ground and was reused over several generations. Visiting the site is like coming face to face with the past. Unlike many tourist sites, Mané-Groh retains a wild and contemplative atmosphere: golden lichens invade the granite boulders, gorse dots the horizon in yellow, and the silence is broken only by the wind from the nearby Atlantic. It's easy to understand why Neolithic populations chose this open promontory as the site of their necropolis. The Erdeven region, less frequented than the Carnaccian sites, is a great place to explore. Just a few kilometres away are the Kerzerho alignments, one of the most extensive groups of menhirs in Brittany, making this micro-region a veritable conservatory of Breton prehistory. For the attentive visitor, Mané-Groh is not an isolated monument but a link in a sacred Neolithic territory whose mysteries are still not fully understood.
Architecture
The Mané-Groh dolmen belong to the family of corridor dolmens, the dominant architectural type in Neolithic Morbihan. Its structure is based on a simple but remarkably effective principle: orthostats (vertical slabs) arranged in parallel rows to form the walls of an elongated burial chamber, covered by horizontal cover slabs (the tables) weighing up to several dozen tonnes. The whole was originally covered by a mound of earth and stones that protected the chamber and gave it its characteristic mound shape. The materials used are exclusively local: grey granite from Morbihan, extracted from natural outcrops that erosion had already cut into usable blocks. The Neolithic builders had an intimate knowledge of the local geology, selecting blocks with favourable cleavage planes. The surfaces of the slabs sometimes show traces of polishing or stonework, and some Breton megaliths from this period bear engravings (cupules, polished axes, abstract signs) that could find their equivalent at Mané-Groh. As is often the case with Armorican corridor tombs, the orientation of the monument probably follows a deliberate astronomical axis, generally oriented towards the rising sun at equinoxes or solstices. This attention to cosmic orientation underlines the funerary and ritual dimensions of the building, conceived not simply as a repository for corpses but as an architectural mediator between the world of the living and that of the ancestors.
Related Figures
Prosper Mérimée — inspecteur général des Monuments historiques, il contribua à faire reconnaître l'importance des mégalithes bretons au XIXe siècleJames Miln — archéologue écossais installé à Carnac, pionnier des fouilles systématiques des monuments néolithiques du Morbihan dans les années 1870-1880Zacharie Le Rouzic — archéologue carnacéen, il recensa et documenta des centaines de mégalithes du Morbihan au début du XXe siècleRené Galles — érudit morbihannais du XIXe siècle, membre actif de la Société polymathique du Morbihan, impliqué dans le recensement des monuments préhistoriques de la régionThéophile Malo Corret de la Tour d'Auvergne — érudit breton du XVIIIe siècle, l'un des premiers à s'intéresser scientifiquement aux antiquités celtiques et mégalithiques de Bretagne
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Nearby castles
Frequently Asked Questions
Where is Dolmen de Mané-Groh located?
Dolmen de Mané-Groh is located in Erdeven, Département 56 department, Bretagne region, France.
Is Dolmen de Mané-Groh open to visitors?
Dolmen de Mané-Groh is currently closed to visitors.
