CianMcLiam wrote:
In Burl's 'Pre-Historic Astronomy and Ritual' and 'The Stone Circles of..' he lays down quite rigid criteria for alignments ie. you must have a man-made backsight AND foresight. He discounts natural foresights such as mountain peaks, valleys etc. because there is no direct evidence of its significance or realisation by the creators of the alignment.
It's always tricky. Burl wrote the above before the current trend in landscape archaeology - I wonder what he thinks now. The above definition would make the Newgrange/Knowth/Dowth alignments just a coincidence for a start, unless you say the passage entrance is the foresite and the rear of the chamber is the backsite. Given this mechanism the only alignments that couldn't be confirmed would be from standing stones. The Drombeg alignment rises over the knoll in front of it. Again, you'd have to use the portal stones as the foresight and the axial stone as the backsight to make it fit with his definition. As they're in the same structure and not separated by a significant distance the alignment is open to interpretation by Burl's rule as stated above.
CianMcLiam wrote:
Not everyone is as strict though!
:-)