Making it genuine then?
I'd agree 100% that some, if not all the holes are natural, and cosmetically enhanced with a ring around some of them. The tearshaped one in particular is natural, but I'll wait for the report from the archaeologists before drinking my disappointment away.
PS, I have another in the area to look at too, thanks to a new plan I just found ;)
PPS What's the closest recorded cup-and-ring/rockart to these?