Based on various criteria (association with landscape features and topography of the sites, raw materials, size, use-wear marks, context, etc.) stones with grooves of standard size made from fi reproof materials are considered tools for straightening reed arrow and dart shafts under heating. The interpretation suggested by R.L. and R.S. Soleckis is thereby supported.
Keywords: “Grooved stones,” stones with transverse grooves, arrow shaft straighteners, fi reproof materials,