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Origin and history

The dolmen known as Briande II is part of a set of three dolmen located in the commune of Arçay, in the department of Vienna. This megalithic monument, dated from the Neolithic, is distinguished by its partially preserved structure: an overturned cover table, based on two orthostats to the south and east, as well as on the ground on the west side. Two other standing orthostats and two lying layers remain visible, suggesting an original chamber of about 4.50 m long by 3.20 m wide. All slabs, in sandstone, could indicate a short angelvin-like dolmen, with complementary blocks to the southeast evoking a vestige of portico.

No official archaeological excavations were carried out on this dolmen, but clandestine excavations were reported. Unlike Dolmen No.1 of the same group, which delivered artifacts (bones, pottery, flint) during searches conducted by Jules Richard between 1887 and 1889, Briande II was not thoroughly studied. However, its designation as historic monuments by order of 29 August 1980 attests to its heritage importance.

The site is part of a larger megalithic landscape, including a third dolmen now extinct, reported in 1837 by Arnault-Poirier, as well as tombs and a large Chassigny tumulus located 200 m west. These elements, though not searched, suggest intense funeral and ritual occupation during the Neolithic. The nearby undated circular ditches reinforce the hypothesis of a sacred or community area, typical of the Neolithic societies of the region.

The Poitou-Charentes region (now New Aquitaine), where Arçay is located, is rich in megalithic remains. Dolmens, like Briande II, served as collective burials and reflected the beliefs and social organization of the sedentary agricultural communities of Neolithic. Their construction, often collective, marked the territory and strengthened links between human groups. The use of sandstone, local material, and the covered aisle structure or dolmen angevin illustrate architectural techniques adapted to the available resources.

The listing of Dolmen Briande II in 1980 is part of a desire to preserve the French megalithic heritage, threatened by erosion, agricultural re-memberments and unauthorized excavations. This monument, although less documented than other nearby sites, offers a valuable testimony of funeral practices and prehistoric engineering. Its present state, although degraded, still allows to study the methods of construction and spatial organization of the collective burials of the Neolithic.

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