Ville Génouhan's gallery grave

This gallery grave dates back to the Neolithic Era, between 3,000 and 2,500 BC. Attested traces of human occupation from the Iron Age at the Guildo castle testify to the long presence of men on this part of the coast.
This gallery grave is an ancient collective grave, almost 13m long, 1.10m wide and 0.90m high.
A hundred men and a good organisation were necessary to build it.