Aha, now you could be onto something there. Each cupmark represents a medal in the neolithic olympics, and the number of rings indicates if it was gold, silver or bronze.

Oh... hang on. Bronze... Hmmm. OK mebbe they had chert, flint and quartz medals?

btw G, you'd have loved the skin decoration on a fella I bumped into at work t'other week, he had Roughting Linn and Lordenshaw inked into his arms. Imagine how chuffed he was to have each bit identified :)