Origin and history
The alignments of Carnac, located in the communes of Carnac and La Trinité-sur-Mer in Brittany, form an exceptional megalithic complex erected around 4,500 BC. Composed of nearly 3,000 menhirs spread over 4 km (perhaps 8 km from the beginning), they combine stone lines, megalithic enclosures, tumulus and dolmens. These monuments, oriented southwest/northeast, probably marked a symbolic boundary between coastal and continental territories. Their arrangement accentuates the effects of perspective, with the largest menhirs (up to 4 m) placed in height to the west.
As early as the 18th century, the alignments gave rise to fanciful interpretations: the remains of the Deluge (Boureau-Deslandes, 1732), the Roman camp (Royer de la Sauverie, 1755), or the Druidic monuments (Celtomanian thesis of the 19th century). The destruction began early: in 1629 stones were taken to build the church of Carnac, and in the 19th century menhirs served as a quarry for roads, houses and lighthouses. In 1889, the alignments of Ménec, Kermario and Kerlescan were classified as historical monuments, but their condition remained critical: in 1887 almost two thirds of the menhirs of Kermario were laid down.
The first archaeological excavations (Miln, 1877-1878) and topographic surveys (Jorand, 1823) marked a turning point towards a scientific approach, although abusive restorations had sometimes reconstructed lines absent from old photographs. In the 20th century, agricultural mechanization and mass tourism (700,000 annual visitors) accelerated degradation. In 1991, the State introduced strict measures: fences, guided tours limited to 30,000 people/year, and sheep grazing to preserve vegetation. Despite local controversies (abandoned from "Menhirland" in 2003), the sites were registered at UNESCO in July 2025 under the title "Megalithes of Carnac and the banks of Morbihan".
The alignments are organized into four main sites: the Ménec (1,050 menhirs on 11 lines, cut by RD 196), Kermario (982 menhirs, the most spectacular but also the most damaged), Kerlescan (300 menhirs, the best preserved), and the Petit Ménec (partly masked by the forest). Their visual continuity, now broken by pine plantations, was perceptible in Neolithic. Menhirs, in local granite, were extracted from natural and sometimes spanned faults. Their uniform orientation (small sides in the axis of the lines) and their association with western enclosures suggest a symbolic or ritual function, although their exact use remains debated.
Local folklore combines alignments with legends, such as that of Saint Cornély: pursued by soldiers, he would have petrified them, giving birth to the "soldiers of Saint Cornély" (sudarded Sant Korneli). Another belief, prohibited by municipal decree in the 1960s, was that the stones would drink in the streams on Christmas night. In the 19th century, romantics (Victor Hugo, Flaubert) and scholars (Ogée, Cambry) contributed to mythifying the site, while pseudo-scientific theories (solar calendar, druidic temple) were mocked by Flaubert in 1858: "Carnac stones are big stones!".
The protection of alignments intensified after their classification in 1889, with the creation of the Commission on Megalithic Monuments (1879) and State acquisitions. However, the deterioration persists: in 1953, the construction of RD 196 damaged the alignment of Ménec, despite the opposition of archaeologists. Today, the sites are managed by the National Monuments Centre, with the House of Megaliths (redeveloped in 2018) as a reception point. Their registration at UNESCO crowns an approach begun in 1996, led by actors such as Yves Coppens (President of the Scientific Committee of Carnac) and the Association Landscapes of Megaliths (created in 2013).
