The populations evolving at the onset of the Bölling oscillation (approximately 12,000 BP) and which have continued to the end of the Preboreal have been generally attributed to the Epipaleolithic. Consequently, this historical period could be associated with the interval between 13,000 and about 9,500-9,000 BP. These communities continued the lifestyles of the Upper Paleolithic. Due to numerous factors, including changes in the climate, the small groups of hunters-fishermen-gatherers innovated tool and weapon types – producing, for instance, microlites (trapeze) — while also keeping the traditional tool types.
