Site archéologique des Marais immergé dans le lac d'Annecy
Monument
Site archéologique des Marais immergé dans le lac d'Annecy, located in Saint-Jorioz (Département 74), is a historic monument. The monument is currently closed to visitors.
Key facts
- Type
- autre
- Location
- Saint-Jorioz, Département 74, Auvergne-Rhône-Alpes
- Visit
- Closed to visitors
- GPS
- 45.8353, 6.1827
- Mérimée Reference
- PA74000015
Buried beneath the waters of Lake Annecy, the Marais site reveals the thousand-year-old piles of a Middle Neolithic palafittic village, an exceptional vestige of a 5,000-year-old lakeside civilisation.
History
Beneath the crystalline surface of Lake Annecy, just a few metres off the coast of Saint-Jorioz, lies one of the most striking testimonies to European prehistory. The Marais archaeological site, classified as a Historic Monument in 2011, is part of this extraordinary network of Alpine lakeside towns that has revolutionised our understanding of Neolithic societies. Here, time has stood still in the mud and cold water, preserving piles, furniture and pollen over five millennia. What makes this site absolutely unique is the combination of remarkable organic preservation and a clear ecological context. The oak and ash stakes planted by the inhabitants in the 38th century BC are still standing in the lake sediments, like the columns of a phantom architecture. Dendrochronological and palynological analyses have enabled us to reconstruct with rare precision the surrounding forests, the crops grown and even the climatic episodes that punctuated the lives of these riverside communities. The visitor experience here takes on a special dimension: as the site is submerged, it cannot be viewed from a paved courtyard or a dungeon, but from the shore or by supervised diving during scientific operations. This very invisibility adds to its mystery. Educational panels set up along the lakeshore and the collections of the Musée-Château d'Annecy help visitors to appreciate the richness of this sunken world: incised ceramics, flint tools, millstones and carpological remains tell the story of a sophisticated peasant life. The natural setting amplifies the emotion: Lake Annecy, one of the purest in Europe, bathes this heritage in a light that changes with the seasons. In summer, the clear waters reveal the contours of the lake bed from the wooded banks; in winter, the morning mist gives the shores of Saint-Jorioz an almost timeless atmosphere, conducive to imagining the smoke rising from the huts on stilts. This constant dialogue between water, mountains and the past makes the Marais site as much a contemplative stop-off as an archaeological one.
Architecture
The "built environment" of the Les Marais site is, in essence, an architecture of petrified ephemerality. The visible structures consist mainly of a network of vertical piles driven into the sediment of the lake bed, the remains of the foundations of dwellings built in the 38th century BC. The piles, carved from hardy local species such as oak, ash and alder, vary in cross-section from 10 to 25 centimetres in diameter and are laid out in regular rows to resemble the ground plan of an organised settlement. The spaces between the piles suggest rectangular building modules of domestic size, comparable to the structures uncovered at other contemporary Alpine palaeolithic sites. Above these foundations, the dwellings were built of wood, with frames and walls of planks or clay-coated wattle and daub, covered with thatch or bark. No elevated remains have survived, but comparisons with better-preserved settlements on Lac de Neuchâtel or Lac du Bourget suggest rectangular houses with one or two rooms, lit by side openings and arranged along plank lanes. Excavations have also uncovered areas of domestic waste rich in organic remains, which constitute veritable palaeoenvironmental archives. The technical specificity of the site lies in the excellent preservation of organic matter ensured by the anaerobic conditions of the lake sediments. Wood, plant fibres, seeds and bones are preserved in exceptional condition, transforming the archaeological layers into a unique time capsule. This extraordinary state of preservation makes the Les Marais site an architectural and ethnographic document of the utmost importance for our knowledge of the Middle Alpine Neolithic.
Related Figures
Hommes et femmes du Néolithique moyen (38e siècle av. J.-C.) — bâtisseurs anonymes des cabanes sur pilotisArchéologues du Service Régional de l'Archéologie Rhône-Alpes — responsables des premières fouilles subaquatiques à partir de 1989Chercheurs du CNRS (laboratoire EDYTEM, Chambéry) — étude paléoenvironnementale et dendrochronologique du siteFerdinand Keller (1800-1881) — antiquaire suisse dont les travaux pionniers sur les palafittes alpins ont posé le cadre scientifique dans lequel s'inscrit le siteAlbert Bocquet — archéologue régional majeur, pionnier de l'étude des stations lacustres du Dauphiné et de Savoie
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Frequently Asked Questions
Where is Site archéologique des Marais immergé dans le lac d'Annecy located?
Site archéologique des Marais immergé dans le lac d'Annecy is located in Saint-Jorioz, Département 74 department, Auvergne-Rhône-Alpes region, France.
Is Site archéologique des Marais immergé dans le lac d'Annecy open to visitors?
Site archéologique des Marais immergé dans le lac d'Annecy is currently closed to visitors.