Hello Chance - that plan you've posted
http://www.themodernantiquarian.com/post/65408/images/jugs_grave.html
looks pretty imaginative to me?? in that a circular structure really isn't obvious from the stones..
But then when you're there in person it's always quite different. Which is not to say that Mr Underwood wasn't imaginative at times, judging by his 'patterns of the past' book.
In any case, I hope you didn't miss the well at Conkwell, just down the road. You have to shuffle up to it on your knees and collect the water in your left hand, making a wish before you drink. (Removing the plastic bags, coke tins etc beforehand for a nicer experience).
