There's not many people that have really studied alignments at ancient monuments. There's plenty of waffle about it, of course. There's few that have gone to a monument at the solstice sunrise, time after time, to see what's going on with the light before dawn, on the horizon; the moving shadows on the ground - all this kind of stuff. Usually visiting a site is a one-off, to collect the 'data' and then bog off to the next one. But it can be easily envisaged that prehistoric theories about light assumed that it traveled in a path and that that path was sacred (or at least special). It's not hard to assume a traveller's list of paths (from Aberdeen to Bristol, say) being a collection of monumental sites - they're usually intervisible.

But if you look for a pattern in the distances between sites don't use a modern unit of length, like the Yard or Metre, as both are relatively modern. Instead try a measure based on a significant length of the earth's circumference. It's not an even measure, as the earth's slightly pear-shaped, but a northern hemisphere value would be ok. If you can find Thom's book Megalithic Sites then that has a simple table for converting compass headings to declination - which is the only way 'scientists' will contemplate alignments. (Good luck).

There's at least one summer solstice alignment at the Knar and the length of it - three points - is about five or six miles. I've not stretched it forward or back, on the map, assuming that that was all there was to it. It'd be great if it went to Lindisfarne (or similar) !