Tashak V. I.
In the territory of the contemporary Oka district, sites of the ancient man are known based on the materials from the surface. Regular investigations of such sites, including those of the Stone Age, started only in 2018. As a result of excavations conducted at some sites, the circumstances of the occurring artifacts in the lithological layers were revealed and the first information about the character of the material culture in the siteʼs cultural layers obtained. The article highlights the preliminary data about Sharza sites located in the Zhombolok River valley (the Eastern Sayan). Two cultural layers were uncovered at this site. The first cultural layer with a few pottery fragments and limited distribution area is tentatively dated back to the Early Iron Age. The second layer is a large site of the Stone Age rich in artifacts. The analysis of the stone artifacts and the circumstances of their position allows to define the site as a workshop – habitation site and date it back to the Neolithic time.