These rows are composed of 1 029 menhirs set out in parallel lines 1 120m long and 100m wide. See the progression in size of the menhirs from east to west. A dolmen gully is situated to the southwest. Further on, on the Manio Plateau, the rows cross over the remains of a 35m-long barrow. A 3m-high menhir has five snakes engraved on its base and five polished axes were buried at its foot.