
They are carefully carved with 3D geometric designs showing an understanding of geometry at least a thousand years before we have any written evidence. About half of the balls found have 6 knobs, but they can have from 3-160 knobs. |
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![]() Stone ball with 14 knobs from Aberdeen (AN1927.2727) |
![]() Stone ball with 7 knobs from Marnoch, Banff (AN1927.2728) |
![]() Stone ball with 4 knobs from Auchterless, Aberdeenshire (AN1927.2729) |
![]() Stone ball with 6 knobs and isosceles triangles between, from near Aberdeen (AN1927.2730) |
![]() Stone ball with 6 knobs and isosceles triangles between, from Fyvie, Aberdeenshire (AN1927.2731) |
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