I was wrong. According to the Bulletin de la SOCIETE NORMANDE DETUDES PREHISTORIQUES Tome III 1895, "There are also two menhirs, identified by the Inventory of megalithic monuments and Mr. Pigeon (canon).
They are located near the three supports of the dolmen, their height is 2m20 above the ground, one tapering up and before reaching the summit, it forms a kind of bulge."
Something is not right. This message is just to keep things from messing up down the road