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"Hmm - the azimuth of the (assumed) west pit from the Heelstone is over 311°, which is a degree north of where summer sunset is today.
That means the alignment must date from a time when the Earth's axial tilt was near its maximum of 24° 21' (but we've got to assume my overlay of the preliminary geophys results is exactly right, which it may not be - wish there were OS grid refs of the pits available right now)."
But then the East pit has the wrong date?
http://mikepitts.wordpress.com/2011/11/29/view-from-the-heelstone/#comment-956
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jonmorris
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