This article analyses, how and why the flint was used after the widespread technology of metal production and processing. The flint collections of the late Bronze Age cemetery of Naudvaris (The district of Jurbarkas), discovered in 2001, and Iron Age settlements of Kernavė in the Pajauta valley (the district of Širvintos) were chosen for this research. This article analyses the flint discoveries in the raw material and techno-typological aspects, the microwear analysis was also applied to thirty of the flints. The research showed, that in Naudvaris the various quality local erratic flint was used and knapped locally. The major part of flints discovered in Kernavė had traces of bipolar-on-anvil technique. They were produced from a poor quality local erratic flint as well as reworked from old Stone Age crafts. Researching Bronze and Iron Age flint discoveries, it appeared that the flint was further used in the first millennium B. C. and the first millennium A. D., even though the raw material supplying strategy and its processing technique significantly changed in the Metal Age. Exclusively local erratic flint, as well as the Stone Age crafts, collected in eroded and windblown sands, were used for knapping. The bipolar-on-anvil technique was one of the main or even the only technique used to process the flint. The flint was used to ignite fires, as well as in other specialized domestic activities which cannot be identified as the data is lacking both in Lithuania and in Poland. The collecting of Stone Age crafts and flint discoveries in graves can be considered as the evidence of ritual knapping
