The marks were once thought to be the signs of the stone being used to polish tools but are more likely to be natural.
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Image Credit: Jimit. Autumn Equinox 2003
Posted by jimit
11th October 2003ce
Edited 27th October 2004ce |
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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