Menhir de la Pierre Longue, Menhir in Guitté, France

The Menhir de la Pierre Longue is a quartzite standing stone 4.28 m tall, 2.20 m wide and 1.18 m thick, its elongated, pointed form giving it its name. The pale grey surface is pitted and cracked, with brown and green patches, and the stone narrows to a blunt, rounded top. It stands beside a field of tall green corn, near the Lampouy alignments and the Roche Carrée menhir.

The menhir was classified as a monument historique in 1967. It was toppled in 1963 and straightened again in 1979. It stands near the Lampouy alignments, a megalithic complex to which it probably belonged, and near the Roche Carrée menhir in neighbouring Médréac.

The stone belongs to a network of megalithic monuments across the region, reflecting how Neolithic peoples marked their territory. These structures likely served as gathering points or boundary markers for ancient communities.

The menhir stands beside a cornfield near Guitté, close to the Lampouy alignments and the Roche Carrée menhir on the Médréac border. It is on private land, so view it from the surrounding paths rather than entering the field. Its 4.28 m height and 2.20 m width are best taken in from a few steps back.

The monument earned special protection status in 1967, setting it apart among the region's megaliths. This official designation made it a key subject for archaeological research and preservation efforts.