There are 195 megaliths in Kerzerho, aligned east to west. They extend over 200 metres in 5 rows. Dating from between 5,000 to 2,000 BC, they have of course suffered over the years. In fact only a few centuries ago there were 1130 stones in 11 rows: the structure must have been 2 kilometres long by 65 metres wide.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.