This small flint nodule from the site of Neve David in Israel has grooves and striations engraved into the cortex.  The artefact dates to the Geometric Kabaran of the Middle Epipaleolithic phase, ca. 15,000-17,000 BP.

 

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An analysis of the grooves and striations on this artefact indicated that they were engraved with a stone flake.  The researchers proposed that the grooves were created in the intentional dulling of the flake’s edge to prepare it for use in hide-working or fibre processing.

The artefact is curated at the Zinman Institute of Archaeology, University of Haifa.