I quite like them actually, I think they're quite funny. And they do draw attention to the local geology in nice locations. And he's been to the Hoar Stone so he's probably quite sympathetic to strange people like us.
The word perspective comes to mind again - especially with the Hoar Stone as the stone in the air looks almost as big as the smaller barrow stone. I liked them too Rhiannon, even more so reading they hadn't been photoshopped - my favourite is Beinn Eibhinn because the stone looks like white quartz.