An outdoor site of the early Mesolithic in Tramoyes "Sous le Port" (Ain)

The site is situated on the banks of the former lake of Les Echets, in a sandy context of alluvial origin which, according to OSL dating, became established during the Late Ice Age. The limited area excavated does not permit study of the distribution of the archaeological remains, manifested by an expanse of pebbles and knapped flints. The main part of the site is attributed to the Early Mesolithic "Beuronien" group associated with some early Sauveterrien elements. C14 dating places the occupation in the middle of the Preboreal. The techno-typological characteristics of the lithic industry show that the knapping concentrated on the production of bladelets at the expense of unipolar cores. Projectile points are dominated by points with oblique truncation, followed by segments and an isosceles triangle. Two small segments belong to the Sauveterrien. The domestic tools are represented by burins, notches and truncated artefacts.