Amongst dozens of stones with natural cups and pits, I came across this one stone with what might be a manmade cupmark on its upper surface. Opinions welcome.
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Image Credit: A. Brookes (26.3.2017)
Posted by thesweetcheat
15th April 2017ce |
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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