I can't let that pass - although I probably should.
Nobody knows much about Rock Art, that is probably its main attraction. And you were the guy that supposedly surveyed ten cupmarked stones at the Knar, yet only found three of them and then classed them as 'natural cupmarks', when the quarry they clearly came from was just a hundred yards away and where there was identical rock, but without any cupmarks at all. (Which effectively undermined everything you surveyed - if you were so wrong there what about other sites you'd seen). And I was working just half a mile away, with a cellphone in my pack.