Six Upper Palaeolithic sites on the Yenisei River in southern Siberia. Radiocarbon dates put Kokorevo I-IV between 15,900-12940 bp. There are wedge-shaped microcores, microblades, sidescrapers, and retouched blades. Level I is Kokorevo culture, II and III are Afontova culture. The Kokorevo culture is dated to c 20,000-10,000 BP and included endscrapers.