Image of Trethevy Quoit by Mr Hamhead

I have often stood at the quoit and wondered why it was positioned in such a place. With the surrounding trees, hedges and houses it is hard to make out the landscape.
Yesterday I was out walking a footpath to the west of the quoit and took this shot. It shows that it sits atop a small hill, take away the surrounding modern day objects and build a mound over it and ....
The two stones in the field in the foreground are possibly rubbing posts....I could not get close to look.