Basic principles of selecting stone raw materials in tool production in the industry of Chagyrskaya peshchera

This article is devoted to Neanderthal adaptation strategies, whose study is becoming more and more relevant in recent years as a result of new discoveries demonstrating Neanderthal cognitive capabilities. Our perception of this subspecies of ancient hominins and of their work skills is changing in view of these discoveries. In this connection, investigation of easternmost Eurasian Neanderthals’ tool manufacturing processes, who produced stone tools in the absence of flint and with the raw materials available, is supposed to clarify researchers’ ideas about the strategies ensuring the Neanderthal subsistence. Purpose . We focuses on main trends in manufacturing stone tools developed by the Gorny Altai Neanderthals within the framework of the Sibiryachikha industry. Our research is based on attributive analysis within a technical-typological method. We aimed at identifying technologically significant morphological and metric features of each item from the collection of stone tools found in Chagyrskaya Peshchera (Cave). In the article, we provide typological definitions for the stone tool blanks, identify variants of the tools’ secondary treatment and the number of such traces on the tool, describe the tools’ edges with retouch and give detailed information on the metric parameters of the tools and blanks. The results of the previously published petrographic analysis, which was conducted by N. A. Kulik, in combination with the attributive analysis of stone artifacts from the 6C/1, 2008 assemblage, indicate that there are four main types of raw materials which were mainly used by the Gorny Altai Neanderthals. Results . The greatest variety of raw materials was recorded in the category of blanks without secondary treatment. Among the tools, the greatest variety is demonstrated by tools that have minimal traces of secondary treatment, namely single scrapers and retouched flakes. There seems to be little diversity among double and convergent scrapers, for which zasuryan jasper were predominantly used. As for bifaces, we observe domination of the blanks made of the zasuryan jasper. Conclusion . Our research has confirmed that the basic principles of using raw materials by the Gorny Altai Neanderthals were the quality and availability of these materials. In general, high-quality stone raw materials were used for the production of well-modified tools, such as bifaces, convergent scrapers and retouched points. Such a selectivity of raw material identified for the items from our collection supports the hypothesis that explains a high degree of Neanderthal adaptation to the paleo-environment.