Historical Monument 29 mai 1931 (≈ 1931)
Official protection of the earth and its structures.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Artificial tertrine covering rooms connected by galleries (Box H 735): classification by order of 29 May 1931
Origin and history
The artificial terre de La Trinité-sur-Mer is a prehistoric monument typical of the Breton region. This site, characterized by galleries interconnected burial chambers, illustrates the architectural and ritual practices of local neolithic societies. Although its precise dating is not mentioned in the available sources, its classification as Historic Monument by decree of 29 May 1931 underlines its heritage and archaeological importance.
The location of the terter, reported in the Merimée database under Insee 56258 (Morbihan), remains approximate according to GPS data, with an accuracy considered "passible" (note 5/10). The site is associated with the municipality of La Trinité-sur-Mer, although an alternative address to Carnac (5187 Kerdreneven) is also mentioned, perhaps reflecting geographical or administrative uncertainties. No information is provided on its current accessibility or tourist use.
The terres of this type, widespread in Brittany during the Prehistory, generally served as collective burials. They bear witness to a complex social organization, where funeral rites played a central role in community cohesion. These structures, often integrated into sacred landscapes, also marked the territory and strengthened links between human groups and their environment. Their preservation now allows us to study the beliefs and construction techniques of these ancient societies.
