Datum 3 to Datum 1 close up of alignment, looking along the precise East to West line. The right hand base of Datum 3; the Southernmost corner of Maen Llia and the centre line base of Datum 1 lie along this E/W line and they also share the same level.
This could well be surviving evidence of prehistoric surveying and setting out of a baseline.
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Image Credit: cerrig
Posted by cerrig
4th April 2020ce
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NB: Unless otherwise stated, this image is protected under the copyright of the original poster and may not be re-used without permission.
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