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Heritage classified

Origin and history

The Menhirs de la Haute-Borne are part of a megalithic alignment located in Brunoy, Essonne department, Île-de-France. This site, dated from the Neolithic, is composed of three distinct stones: the Haute-Borne à la Mistresse (2.75 m high), the Gros Caillou (currently overturned), and a third menhir of 1.75 m. These megaliths are located near the Yerres River, about 750 m from another line called the Fritte Stones.

The Haute-Borne à la Mistresse, after being overturned by a flood, was straightened around 1865 and consolidated with a metal hook. The site was officially classified as historic monuments by order of 22 February 1977, thereby recognizing its heritage value. Menhirs are located precisely at 10 rue des Vallées in Brunoy, and their protection specifically covers the three stones (cadastre AY 134).

These monuments bear witness to the cultural and religious practices of neolithic societies, which erected stones erected for still partially mysterious reasons (territorial markers, places of worship, or astronomical landmarks). Their presence in Île-de-France, a region less known for its megaliths than the West of France, makes it a remarkable archaeological site. Alignment is accessible to the public, although its exact location is considered to be of poor accuracy (level 5/10 depending on the sources).

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