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Origin and history

The covered driveway of Kergustance, located in Moëlan-sur-Mer in Finistère, is a funeral monument dated to Neolithic. It illustrates the late megalithic architecture of the region, with a two-part structure: a master bedroom with straight pillars and a triangular terminal cell, characteristic of the Armo Rican burials. The slabs, made of local pink granite, are arranged in seven cover tables supported by sixteen orthostates, although two of them are missing today. The north-east/south-west orientation and the slope of the tables to the southeast suggest a deliberate design, possibly linked to symbolic or astronomical considerations.

The monument was first mentioned in 1874 by René-François Le Men, already damaged at that time. Paul du Châtellier began excavations in 1882, discovering only a Gallo-Roman cinematic urn and Roman bronze pieces, indicating a post-construction reuse. These excavations also reveal the existence, until the beginning of the 20th century, of an adjacent 42 m megalithic alignment, which is now extinct. Aisle is classified as a historic monument in 1996, protecting both the structure and a 10-metre perimeter.

According to local tradition, the site was associated with korrigans, Breton folk creatures known to attract passers-by — especially elderly people or men going to the nearby mill — to have them dance all night around the monument. This legend reflects the cultural importance of megaliths in Breton imagination, often linked to supernatural narratives or forgotten ritual practices.

Architecturally, the Kergustance gangway is distinguished by its arc-buttoned structure in the western part, a rare variant typical of southern Brittany. The independent terminal cell, separated from the main chamber, is a marked Armenian line. The deterioration observed, such as the inclination of slabs or the damage caused by the growth of trees inside, reflects the alterations suffered over the centuries, despite its late inscription as historical monuments.

Historical sources, including the works of Le Men (1876) and the Châtellier (1907), point to its archaeological interest, although excavations only delivered few objects. Gallo-Roman urn suggests an occupation or re-appropriation of the site long after Neolithic, while Roman pieces may indicate sporadic attendance. Today, the monument remains an emblematic example of Finistrian megalithic heritage, protected and studied for its heritage and symbolic value.

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