Dolmen à couloir de Coëby - 1 TREDION View slideshow Share on Facebook Share on Twitter Home » detail » Dolmen à couloir de Coëby – 1 Mégalithe This dolmen has a trapezoidal chamber and very large, about 20 square meters. The supports are large slabs 1.50 m to 2.00 m long and very flat, 0.20 m to 0.30 m thick. The hallway appears to enter into the interior of the chamber as two supports are visible. There is no hallway visible outside. The entrance located to the south-east consists of four supports, two of which are inside the chamber. There is only one roof tile left at the entrance. This dolmen seems to have the characteristics of a compartmentalized dolmen. The cairn is still in very good condition. Read more Close Features Languages spoken