RA doesn't have to have been created all within the same time frame. (Bad grammar). Those scratches and tiny pits could have been made at a later date - Iron Age ? - when the monuments were more substantial. Much in the same way that they are spray painted (and carved sometimes) now. If one were to try to put an edge onto the tip of a sharp knife - to simulate an arrow - with a whetstone, then an entirely different technique will be found to be effective.

Triple conjunction of venus, sun and mars for a couple of weeks more - should be an interesting time. 'In Libra', at present, concludes in Scorpio. It's just energy ...