http://www.themodernantiquarian.com/post/34591

Thanks for this photo.

Re: the two stones in the foreground. Looking at the photo it looks as if from where the stones are the Quoit may be skylined (if the trees are taken away). An uncanny place to put a couple of rubbing posts methinks.

I would be nice to know if they are two halves of one tall stone or two stones as well. Either way it's unlikely that they are rubbing posts.