The Baikal region is viewed as the easternmost territory where the Upper Paleolithic complex appeared the earliest. Its chronology is relevant in establishing the chronologies of its adjacent regions. The Baikal Upper Paleolithic sites are numerous and well-represented. The beginning of this period is well-defined as shown by the dated profiles, detailed technical or typological characteristics of industries, elements of symbolic activity, and subsistence strategies. This paper will present some archaeological evidence, retrieved from own excavations in the region, of Modern Human behavior in the area at around 40,000 BP.