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Origin and history

The Menhir de Bissin, locally nicknamed Caillou de Gargantua, is a megalithic monument emblematic of the Guérande region. Located 3 km southeast of the city, in the Loire-Atlantique department, it dates from Neolithic. A height of 3.50 m for a width of 2 m and a thickness of 0.80 m, its slightly trapezoidal shape and its rounded apex, marked by a horizontal groove, could evoke a phallic or anthropomorphic representation. A dolmen was once nearby, now destroyed, suggesting a larger funeral or ritual site.

Ranked a historical monument by decree of 1 August 1978, the Menhir de Bissin illustrates the importance of megalithic constructions in the neolithic cultural landscape of western France. Its local name, Caillou de Gargantua, refers to legends combining these stones with mythical giants, reflecting the popular fascination for these prehistoric remains. The site is listed in the Mérimé inventory and documented in specialized works, such as 100 menhirs & Dolmens in Presqu ́île Guérandaise & en Brière (1990).

Menhirs, like Bissin's, were probably linked to religious, funeral or astronomical practices during Neolithic times. Their erection testifies to the technical skills of the communities of the time, able to transport and build blocks of several tons. In Pays de la Loire, these monuments spread the territory, offering a precious archaeological heritage to understand the prehistoric societies of the region.

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