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Heritage classified

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Origin and history

The Kergonfalz dolmen, also known as the Kergonfalz tumulus, is a megalithic monument located in Bignan, Morbihan. It is located in a wood to the north of the road of Moustoir-Ac, near several hamlets. This corridor dolmen, surrounded by a circular tumulus of 30 meters in diameter, has been classified as historical monuments since 5 March 1969.

The dolmen was explored in 1864 by R. Wales and A. Mauricet, founding members of the Morbihan Polymathic Society. Their search revealed an intact tumulus, which led to the local legend that the site was used as a hiding place for the Chouans. The 5.2-metre-long dolmen corridor features an original architecture with two height breaks and a junction before the entrance to the funeral chamber.

During excavations, human bones and archaeological furniture were discovered, including a squid, a flint blade of Grand-Pressigny, three polished axes and four granite slabs interpreted as dormant grinding wheels. These objects are now preserved in the collections of the Morbihan Polymathic Society.

The dolmen is located near a covered driveway, also called Kergonfalz, suggesting a concentration of megalithic sites in this area. The tumulus, consisting of dry stones and earth, envelops a rectangular chamber covered with a single cover table. The ensemble illustrates the funeral and architectural practices of Neolithic in Brittany.

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