Dolmen d'Er Houel, Prehistoric megalithic monument in Locmariaquer, France.

The dolmen d'Er Houel stands at the tip of the Er Houel point, just back from Saint-Pierre beach under pine trees. Almost entirely ruined, it keeps three orthostats of the chamber, with the fallen capstone lying on the ground; the chamber floor is paved with large stones. The two visible stones are pale grey, mottled and weathered, one upright and one lying flat.

The dolmen is a Neolithic gallery grave whose chamber was about 2 metres wide, with a paved floor of large stones. Its original length and type cannot be determined, and only three orthostats survive around the fallen capstone. It was inscribed as a Monument historique by decree of 24 July 2023.

The monument is also called Dolmen de St-Pierre-Loperec, after the hamlet of Saint-Pierre just north of the pine wood. It was inscribed as a monument historique by decree of 24 July 2023. Nearby stand the dolmens of Kerlud and Kercadoret, part of the same megalithic group around Locmariaquer.

The dolmen stands at the end of the Pointe d'Er Houel, about 2 km southwest of Locmariaquer's centre and 1 km west of the Pierres Plates, just back from Saint-Pierre beach in a small pine wood. It is reached on foot; the stones lie on bare, leaf-strewn ground among the tree trunks.

The German name Dolmen de St-Pierre-Loperec links the monument to the hamlet of Saint-Pierre just north of it. The chamber floor is paved with large stones, and the fallen capstone lies on the ground beside three surviving orthostats. Nearby stand the dolmens of Kerlud and Kercadoret.