Hi John and Doves,
 
Kevin - please have a look at this formation. Again, I ask your indulgence. I think you will find this very interesting, indeed.
 
http://www.dailymail.co.uk/news/article-1027178/Easy-pi-Astrophysicist-solves-riddle-Britains-complex-crop-circle.html
 
YSIC
 
Fay