Timeline

Heritage classified

Key figures

Origin and history

The covered driveway of Er-Roh, also known as the covered driveway of Mané Roullarde, is a megalithic monument located in La Trinité-sur-Mer, Morbihan. Data of Neolithic, it was explored in 1866 by the Morbihan Polymathic Society, but its initial state, surrounded by a dry stone wall, complicated excavations. Its dimensions (19.40 m long, 22 supports) and its four cover tables make it a remarkable example of the collective burials of the time.

In 1879, James Miln inventoria the site and noted fifteen orthostats, estimating its length at 15 m. Zacharias The Rouzic began excavations in 1900, discovering vases, flint tools (including an arrow point and a blade of the Grand-Pressigny), as well as a shale pendant. These artifacts, preserved at the Museum of Carnac, reveal artisanal and ritual practices. The Rouzic also restored the monument in 1930, although this intervention was criticized for controversial changes, such as adding a slab from a nearby menhir.

Ranked a historic monument on September 11, 1929, the covered road of Er-Roh illustrates the challenges of preserving megalithic sites. The debates on the 1930 restoration highlight the tensions between conservation and archaeological interpretation. Today, the site remains a key testimony of the Breton Neolithic, despite persistent questions about its original state.

Archaeological furniture, although limited (seven fragmented vases, lithic tools), offers an overview of local cultures. The lack of material during the first explorations (1866) contrasted with subsequent discoveries, reflecting the evolution of excavation methods. The precise location of the site, near 9D Rue de Kerisper, makes it a point of interest for the study of Morbihan megaliths.

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