Devil's Den

Chambered Tomb

On the inside surface of one of the uprights is this rhomboid recess. Man-made or natural? Siginificant to our ancestors or not?

Image Credit: Copyright waived UncleRob
Posted by UncleRob
6th August 2009ce

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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