Hi, thanks for that.

You mentioned 4 points. Which did you mean? I was only thinking about three - the S-S-S alignment (though as a separate issue, the view of WKLB from Silbaby seems particularly impressive IMO).

I'm not "convinced" about it being intentional either. I was just posing a humble question.... does "very accurate" signify a heightened likelihood? ;)

In musing about this elsewhere I've come up with a further possible dimension - literally. See this - Silbury from the Sanctuary, with Silbaby hidden by the trees - http://www.themodernantiquarian.com/post/19965

Silbaby is lower than Silbury obviously - but what about Silbury 2? Would the Sanctuary and the top of Silbury and the top of Silbury 2 all be in a line? Not a two dimentional exact alignment but a three dimensional one....

Aren't the chances it is "chance" reducing dramatically?

Nigel
It's interesting that you bring up the Thornbro alignment.
The North Yorkshire antiquarians from Knox through Mortimer to the mighty Elgee seem pretty much in agreement that triple barrow alignments of the North York Moors reflect the handle of Charles or Carles Wain. There are at least 9 groups called 'The Three Howes'.
Elgee notes that barrow groups of between 6 and 7 monuments at Hugglegate Wold, Hulleys, Ebberston Low Moor, Carlton Bank and the ridge between Farndale and Bransdale also 'suggest the plough'.
Check this out
http://www.themodernantiquarian.com/post/44244