SL, I did offer to visit the Knar, but it got passed to someone who lived a little closer. If it’s the person I think it is, they're pretty good at geology and determining the likelihood of what 'is' and 'isn't' rock art (as much as you can). Sorry if you feel a little let down by their opinion, but finding & recording 10 rocks would take up a day and a half, & there’s little point if you believe them to be natural (unless previously recorded). There’s plenty in the Beckensall Archive that have had 'probably natural' slapped on them during the project, so don’t feel victimised.
FW, sorry for the above comment, you just rub me up the wrong way sometimes.