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Origin and history

La Roche-aux-Fées is a covered driveway located in the town of Essé, Ille-et-Vilaine (Bretagne). Data from recent Neolithic (between 3000 and 2500 B.C.), this megalithic monument consists of 42 stones, some of which reach 45 tons. Its architecture, of the dolmen type with anangevin corridor, includes a master bedroom divided into four parts and an antechamber, all oriented north-north-west – south-south-east. The site is exceptional because of its geographical isolation, most of the similar dolmens in Anjou.

The name of the monument comes from a local legend that the stones were brought by fairies. This belief, common to the dolmens, is attested from the eighteenth century. In 1752 Father Roussel made it a first written mention, followed in 1756 by Anne Claude de Caylus, who gave a detailed description and illustrations. The site also appears on the map of Cassini. Over the centuries, he drew the attention of scholars, such as Jean-Baptiste Ogée in 1778, who described his structure and reported popular beliefs, including the one making this monument a tomb of Roman general.

Ranked among the first French historical monuments in 1840, the Roche-aux-Fées suffered degradation over time: clandestine excavations by peasants at the end of the 18th century, feast organized by the regiment of Orléans dragons in 1789 (damaging slabs), and acts of vandalism by English tourists around 1855. In the 19th century, local archaeological societies, such as the Ille-et-Vilaine Archaeological Society, were of interest, but no in-depth excavation was carried out.

In the 21st century, the site, frequented by 35,000 annual visitors, was studied for conservation. In 2010, a health survey was carried out by the Laboratory of Historical Monuments, leading to work in 2018: embankment around stones and installation of a fence to limit erosion. A signage now informs visitors of the fragility of the monument. Each winter solstice, a gathering observes a unique luminous phenomenon where a sunspot crosses the dolmen corridor.

The legends surrounding the Roche-aux-Fées are numerous. One relates that fairies, having built the monument, would have dropped useless blocks, thus creating the surrounding menhirs like that of Runfort. Another belief is that newlyweds with the same number of stones around the dolmen will see their union last. Other stories evoke fairy-protected souls whose lamentations would be carried by the wind since the disappearance of the trees two centuries ago. These oral traditions, collected in the 18th and 19th centuries, reflect the popular Breton imagination.

From an archaeological point of view, although no excavation has confirmed it, the structure suggests a funeral role, like most dolmens. The presence of a stony soil suggests that it was initially covered with a tumulus or a cairn. The stones, in Cambrian purple shale, probably come from the forest of Theil, located 5 km away. The monument, owned by the municipality of Essé, is today a major tourist site, integrated into the community of eponymous communes.

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