Both are dated to the neolithical age of about 4.500 B.C. and were discovered at the beginning of the 20th century.
The quadrilateral enclosure of local granite stones have a height of max. 1 meter. The length of the site is about 37 meters, the eastern width is app. 10 meters but western width app. 7 meters. It was supposed to be a surrounding of a flattened tumulus.
|Quadrilatère de Manio|
|Menhir Géant de Manio|
|Stones on top of the Géant|