LE NID-OBSERVATOIRE DU MARAIS DU FRESNIER
LAVAU-SUR-LOIRE
Originally, this menhir, 3.60m high, 1.10m wide and 0.35m thick, stood at a place called Bussoleries de la Tonnelle in Saint Hilai
The reinforced concrete headframe replaces the 1st wooden one. Height of the headframe: 25m.