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Oh dear! I think you need to check your maths. Jeremy Butler actually gives the length of the Erme row as about 3320 metres, which introduces an error of 0.63% in your calculation. With this degree of error you would need a ratio of around 302:1 to get somewhere near to 595 miles, but this is purely academic. By choosing your own scale you can make the figures fit any theory that you care to. The truth is that the prehistoric people who built the row simply did not have the technical capacity to survey over such vast distances in order to be able to produce an accurate scale map in stone in the landscape and even if they did, they most certainly did not measure distance in modern units such as the mile.
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