The alignments of menhirs Kerzerho are located in the town of Erdeven, in Morbihan, 30 km west of Vannes.
In 1884, a count was reported on the site of 2 km of a set of 1100 standing menhirs and 5000 other couch (not to be confused with the dolmens, which have the form of horizontal tables). Today there are nearly 200 lined up in a dozen rows. It is the second most important Breton megalithic site after Carnac. Their configurations are similar.
Classified as early as 1862, all the menhirs of Kerzerho date from the Neolithic period (the age of the Polished Stone, from -5000 to -2000 BC). According to some researchers, the Kerzerho menhirs, the tallest of which are 6 meters long and weigh 40 tons, were originally girded with an enclosure, forming a "cromlech".
The site of the alignments is in free access all the year on both sides of the departmental road leading to Plouharnel. Guided tours are offered in summer. Price: 5 euros. Information on +33 2 97 55 64 60.