Construction period Néolithique récent (≈ 4100 av. J.-C.)
Lake habitat and wooden piles.
1867
First prospecting
First prospecting 1867 (≈ 1867)
Initial discovery of the archaeological site.
1998
DRASM Searches
DRASM Searches 1998 (≈ 1998)
Decapage and discovery of lithic furniture.
24 octobre 2011
Historical Monument
Historical Monument 24 octobre 2011 (≈ 2011)
Official protection of the submerged site.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
The archaeological site immersed in the lake off the banks of the commune of Aiguebelette-le-Lac, in total (Box OA 878) and located around a central point X 870,800; Y 2066,300; Z 372.40 (- 1.60) coordinates Lambert II extended, corresponding to a pile area of 128 m. x 52 m., according to the plan annexed to the decree: classification by order of 24 October 2011
Key figures
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Origin and history
The Beau-Phare archaeological site, also known as Boffard, is a complex immersed in Lake Aiguebelette, near the commune of Aiguebelette-le-Lac. This site is one of the lakeside cities studied in the Auvergne-Rhône-Alpes region, demonstrating human occupation in a wetland. Remnants include wooden retaining piles, still visible today, as well as traces of recent Neolithic habitat. These discoveries illustrate a lifestyle adapted to lake areas, typical of European prehistory, and cover a period from Neolithic to Bronze Age.
The site's first exploration dates back to 1867, revealing its archaeological importance. In 1998, a stripping campaign carried out by the services of the DRASM (Department of Subaquatic Archeological Research and Sub-Navies) allowed to clarify the right-of-way of habitats and to discover significant lithic furniture. These excavations confirmed that the Beau-Phare site, dated from the final Neolithic, was a structured dwelling, with buildings supported by wooden piles.
The site was classified as Historic Monument by order of 24 October 2011. This protection covers all submerged remains, including a pile area of 128 metres by 52 metres, located off the banks of the municipality. The precise coordinates of the site were defined in extended Lambert II, emphasizing its importance for understanding prehistoric settlements in lake environments.
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