Allée couverte d'Er-Roh

About

The covered driveway of Er-Roh, also known as the covered driveway of Mané Roullarde, is a covered driveway located in the commune of La Trinité-sur-Mer in the French department of Morbihan.

History: The monument was explored in 1866 by the Morbihan Polymathic Society. At the time, the monument was surmounted by a dry stone fence wall that did not allow easy excavation of the building. In 1879 Miln explored the entire surrounding hill and inventoried several monuments, including a covered alley, bounded by fifteen orthostats, whose length he estimated to be 15 m. Zacharie Le Rouzic searched the covered alley in 1900 and restored it in 1930. The monument was classified as a historical monument by decree of 11 September 1929.

Description: The monument is approximately 19.40 m long by 1.60 m wide on average. It is bounded by twenty-two supports, the highest reaching 2.15 m high, and dry stone walls. The driveway opens south. The set still has four cover tables. According to Le Rouzic, three orthostats include engravings. The restoration carried out by Le Rouzic in 1930 was contested in 1939: a nearby menhir visible on the plan...