Timeline

Heritage classified

Origin and history

The tumulus and alignment of Saint John Bay, located in the commune of Crach (Morbihan, Brittany), is a major vestige of the Neolithic period. This archaeological site, composed of a tumulus and an alignment of stones, illustrates the funeral and ritual practices of prehistoric societies in this coastal region. Monuments of this type were often related to symbolic or commemorative functions, reflecting the social and spiritual organization of the communities of the time.

The site was officially recognized and protected by a registration order under the Historic Monuments on 24 July 2023. This decree covers not only the visible structures (tumulus and alignment), but also the soil of the cadastral plots YI 115, YI 116 and YI 117, thus guaranteeing the preservation of its archaeological context. The location of the site, near the Bay of Saint John, suggests a deliberate choice linked to geographical or symbolic criteria, typical of neolithic constructions in Brittany.

Available data, including data from the Merimée database and Monumentum, indicate that the accuracy of its location is considered "passable" (note 5/10), with an approximate address located at Kerorang. Although little detailed information is available on the excavations or specific discoveries associated with this site, its recent listing underscores its heritage importance and the need to preserve it for future studies.

In the Neolithic era, Brittany was marked by a growing sedentarization of populations, an emerging agriculture and the construction of megalithic monuments. These buildings, such as the tumulus and alignment of Crach, often served as territorial markers, places of worship or collective burials, playing a central role in the cohesion of the human groups of the time. Their disposition and orientation could also reflect astronomical knowledge or beliefs related to natural cycles.

Today, the Saint John Bay site is part of a Breton landscape rich in prehistoric vestiges, contributing to the understanding of lifestyles and cultural practices of early peasant societies. Its status as a Historic Monument allows us to consider in-depth studies, while protecting it from potential degradation related to urbanization or modern human activities.

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