At Supraśl 3 in north-eastern Poland, four Bell Beaker features contained small quantities of burnt and highly fragmented human and animal bones and various, mostly fragmented, artefacts. These assemblages included twenty-four flint arrowheads, most of which bore traces of grinding, though not all were ground to the same extent. A comprehensive macroscopic and microscopic analysis was undertaken to determine the process of shaping these arrowheads and the possible reasons for grinding them, especially as no local flint working was recorded at the site. The authors suggest that the grinding of arrowheads reflects both practical and ritual concerns, possibly originating in emulation of techniques used by the Rzucewo culture and signalling contacts with the wider Bell Beaker milieu.
