Located in a wooded area on the edge of farmed fields, the site includes two burial structures some 40 metres apart; the one to the north is known as Parc er Guren; the other one to the south is known as Parc Nehue.
When Zacharie Le Rouzic excavated the larger of the two Parc er Guren dolmens in 1897, he discovered a passage dolmen. Part of the floor is covered with a slab, and according to the evidence he found, must have had a corbelled roof (a cupola formed by stone slabs). He also reported some cupules (manmade circular hollows in the surface of a slab or rock) and engraved symbols on the orthostat slabs.
In 1926, Zacharie Le Rouzic had both dolmens protected as historic monuments and restored them. He replaced two capstones on the Parc Nehue chamber; these had been found inside it by Gustave de Closmadeuc during his excavation in 1866.