I guess you're in for a rude shock then, as Von Luschan has relatively little to do with positioning and everything to do with human migratory patterns.Unless you think a 30°+ band is informative, I guess.
Decloak: Though at 3000 BC, I don't think human migrations would be able to outrun the pace of skin colour change in the same way that has happened in the past 500 years or so.
Unless you think a 
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