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Heritage classified

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Origin and history

The dolmen of Tri-Men-de-Castello, also known as Er Tri Men, is a corridor dolmen located in Kervignac, Morbihan. This megalithic monument dates from the Neolithic and is distinguished by its rectangular burial chamber (1.90 m x 1.20 m), bounded by three orthostats and a support, covered by a single cover table measuring 3 m long by 2.80 m wide. A fourth erect slab remains visible outside. The corridor, now disappeared, is evoked by a pillar still standing, on which an engraving representing a small axe arming is observable.

The dolmen was listed as historic monuments by order of 17 August 1934, thereby recognizing its heritage value. According to Le Rouzic's observations, an orthostat and the pillar may have worn engraved signs, although only the axe that is stuck is now clearly identifiable. The orthostats, of a height of between 1.80 m and 2 m, testify to the megalithic construction technique of the period, typical of the Breton region.

The structure, although partially ruined, retains an imposing table and architectural elements characteristic of the corridor dolmens. These collective funeral monuments reflect the cultural and religious practices of neolithic societies, marked by the cult of ancestors and a complex social organization. Their distribution in Brittany, and particularly in Morbihan, illustrates the importance of this region in European megalithism.

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