Datum 1 stone straddling the boundary between the natural slope of the hill and the artificial platform.
Datum 2 is another stone that's very similar in size shape and orientation to Datum 1, it sits in the background precisely true South of Datum 1, against the fence.
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Image Credit: cerrig
Posted by cerrig
29th March 2020ce |
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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