It was a great pleasure to see Swinside (Sunkenkirk) on BBC2's The Code by Marcus du Sautoy.
http://www.bbc.co.uk/programmes/b012xppj
But were you soon shouting (or muttering) at the screen "no, the reason you calculated a diameter to circumference ratio of 3.2 not 3.14 is because it's not round, it's an ellipse!"
I wonder how many stone circle anoraks have emailed Professor du Sautoy to point out this out. However before I did I thought I should refresh my rather rusty memory...
Continued here
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Something is not right. This message is just to keep things from messing up down the road