Due to the lack of natural stone deposits, the prehistoric population of the Drava
Basin obtained most of their
stone materials from “imports”. The only locally available and obtainable stone material
was gravel transported by the river Drava. Suitable pebbles were used to make tools
that could be used without significant reshaping, or were used in their natural form.
Very few researchers have studied the subject,
which is why the author has found it useful to publish the results of his observations
to date.
