Looks like we have a new Roman Dodecahedron -level mystery.
Mysterious clay or stone tablets, covered in dots, square & triangles, from before recorded history.
https://www.thehistoryblog.com/archives/76785
The tablets, usually made of clay but sometimes of stone, feature incised lines and impressions of geometric shapes including triangles, squares and circles. The oldest of the tablets are predominately characterized by impressed dots.
They have been interpreted as possible calendars, counting tools, or forms of proto-writing. A ritual function has not been ruled out either, extending to the hypothesis that they might have been used as a sort of sacred amulet. One of the most intriguing interpretations today, however, links them to the management of trade, suggesting a function comparable, in some respects, to modern shipping documents used to identify specific goods (perhaps metal).