High quality Carbon dating might go back for 30KY. I read somewhere that the limit was 45KYBP, but don’t quote me.
The Carbon in the Ostrich shell and possible wood fragments in the strata with the marked stone might provide enough Carbon to measure the Carbon ratios with statistical confidence.
This is a significant find, if it really is valid, as the dawn of literature will have been pushed back by at least 5 X.
At this time Central Europe was a Polar desert.
It will be interesting to find out the elevation of this site.
The practical limit for RC dating of a field sample is about 50K before present, a perfect theoretical sample (whatever that is) the limit is about 60K (the equipment’s more sensitive now).