The project aims at analyzing the relationship between the technical properties of flint artefacts from various prehistoric sites in the Scheldt valley and the origin and weathering of micro wear traces preserved on these artefacts. By characterizing the intrinsic properties, combined with functional experiments as well as weathering experiments, the evolution of micro wear traces in relation to the structure of the flint will be analyzed, e.g. by means of a new 3D registration protocol.