You could well be right mate as it looks similar. Not so sure about them being staddle stones tho, i'd already thought of them, aren't the flat tops more for grain stores to keep the rats and mice out? You might just manage to get meadow grasses to make hay on this land as it looks sheep or possible cattle pasture land and not arable as such.

Next time I'm up there I'll go without the dog and jump the wall to get some better pics.