New final Upper Paleolithic site on the Krasnoyarsk reservoir: Sidorikha site

The article provides the results of archaeological work at the Sidorikha site (Khakassia, Krasnoyarsk Reservoir) in 2022. The site was discovered in 2020 during the archaeological survey conducted by a team of the Institute of Archeology and Ethnography of the SB RAS on the coast of the Krasnoyarsk Reservoir. Archaeological finds were discovered in an exposed condition and in two test pits in situ. The stratigraphic position of the cultural layer allowed its dating in the post-LGM. The main objectives of the 2022 work included: to determine the degree of conservation of the site after the maximum rise of water in 2021, and to clarify the stratigraphic situation and collection of exposed artifacts. The collection of exposed artifacts is not numerous (115 items). The primary reduction system is characterized by the presence of large cores for blades and flakes and wedge-shaped microcores. The spalls include blades, flakes, and various technical spalls. The toolkit is dominated by end scrapers and scrapers on flakes and blades. The typology appearance of exposed artifacts and materials from the cultural layer obtained in 2020 and 2022 allows considering them as a part of the same complex. According to its characteristics: the combination of large cores for blades and wedge-shaped microcores; the presence of end scrapers on the blades, retouched blades and burins in the toolkit, the Sidorikha site complex should be attributed to the Kokorevo archaeological culture, which existed in the Yenisei basin inpost-LGM. The specific feature of the Sidorikha site is its location on a high terrace of the Yenisei River; a similar location was previously noted for later sites dating to the Pleistocene-Holocene boundary.