In 2020, extensive archaeological research was carried out in the western part of the Kalviai

Lake valley. New sites were identified, one of which was named Vilūnai 5. It is a sandy open-air

site located on a fluvioglacial hill. The archaeological investigations have shown that the site

was probably visited by people as early as the Final Palaeolithic, but the most intensive episodes

of occupation are seen in the Mesolithic, Subneolithic and Neolithic periods, as well as the

beginning of the Metal period. This paper aims to present the results of these excavations. It

provides data on the flint and non-flint lithic artefacts and ceramic finds. Although the site does

not contain preserved organics, and therefore much data concerning human activity is absent,

this paper aims to integrate the Vilūnai 5 site and its archaeological material into the overall

context of Stone Age sites around Kalviai Lake’s shores.