EN
The article presents the results of Report the archaeological excavations at site 12 in Kalsko related to the construction of the S-3 motorway between Gorzów Wielkopolski and Międzyrzecz. In total, the research provided the possibility to acquire a complex of 1099 relics, including: 21 cores, 3 tanged points, 11 microlithic tools, 8 end-scrapers, 9 burins and 2 flake-axes, among others. Analysis of the flint inventory acquired during the excavations provides the possibility to conclude that the site was settled in two periods. In the first one – they were left by the Lyngby culture, while in the second the relics of the camp are dated to the Mesolithic Period.