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Origin and history

The Menhir de la Vacherie, also known as Gargantua Galoche or Carlet Menhir, is a block of tapered stone 4.75 m high, 1.60 m wide and 0.48 m thick, erected during the Neolithic period. Originally set up in a meadow near the Loire, on the territory of the farm of the Vacherie in Donges (Loire-Atlantique), it was accompanied by a dolmen today destroyed, searched in 1879 by Pitre de Lisle du Dreneuc. The latter discovered pottery studs, flints and a diorite axe, evidence of an ancient occupation. The dolmen cover table, 4.67 m long, was partly based on a 1.90 m high pillar.

According to historical sources, the menhir was surmounted by an iron cross in the 18th century to serve as a bitter seaman until a storm destroyed it in 1780. Ranked a historic monument in 1889, it became inaccessible after 1933 with the construction of the Donges refinery, which included the site. The broken fragment at its base, moved in the 1980s for industrial reasons, has since disappeared. The dolmen is now near the Nantes-Saint-Nazaire railway tracks, in a ruined and dangerous state of access.

The local legend tells that Gargantua, a mythical figure, would have overturned the dolmen's table by launching pallets, explaining the dispersion of the megaliths around. This folklore reflects communities' attachment to these monuments, often associated with epic stories. The menhir, although protected, illustrates the tensions between heritage preservation and industrial development, its current isolation contrasting with its past role as a maritime and cultural landmark.

The excavations of 1879 revealed an archaeological layer at a depth of 0.40 m, containing traces of coal, flint tools and coarse to degreasing quartz pottery. These artifacts suggest a funeral or ritual use of dolmen, typical of neolithic practices. Today, only a slab of the dolmen still emerges from the rail ballast, fragile vestige of a once larger megalithic ensemble.

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