Construction of covered driveway Néolithique (≈ 4100 av. J.-C.)
Estimated period of megalith building.
1968
Discovered by D. Guillas
Discovered by D. Guillas 1968 (≈ 1968)
Identification of the megalithic site.
8 janvier 1970
Registration for historical monuments
Registration for historical monuments 8 janvier 1970 (≈ 1970)
Official protection of the monument by arrest.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Covered alley (Case C 47): inscription by order of 8 January 1970
Key figures
D. Guillas - Discoverer and archaeologist
Identified covered driveway in 1968.
Origin and history
The covered alley of Coguer Neguinan, also called dolmen de Palastre, is a megalith located in a wood near the hamlets of Palastre and Moulin-de-l'Évêque, 1.3 km from the village of Mériadec (Plescop, Morbihan). Discovered in 1968 by D. Guillas, it was listed as a historical monument on 8 January 1970. Measuring 8.8 m long for 1.20 m wide, it is oriented north-east/south-west and consists of fourteen granite orthostats, some of which are still included in a tumulus. Three covering slabs remain, one of which is 3.5 m long.
The site was not thoroughly excavated, but archaeological furniture was collected in the vicinity: a flint blade, a drill, a cut sandstone scab, three polished axes (two of which are dolerite), as well as a fragment of a millstone, a red terracotta fusaïole and a shale pendant. These artifacts suggest a funeral and ritual use typical of Neolithic, a period marked by the emergence of agriculture and sedentary societies in Brittany.
Covered walkway illustrates Breton megalithic architecture, characterized by collective burial chambers in dry stone. These monuments served as places of burial and worship for local communities, reflecting their beliefs and social organization. The discovery by D. Guillas and the rapid listing of historic monuments underline its heritage importance, despite its partially ruined state.
