The age of the lines and how they were formed still needs to be verified, but there is a chance this may be one of the oldest ...

meaning the person who engraved the rock then owned it. If scientists are correct about the stone’s lineage, it could be one of the oldest examples of rock art known to man.

Metal （Not for hardened steel）,Stone,Wood,Leather,Glass,PVC Pipe,DIY Crafts, The marks which you engrave can be personally , you can own your own Logo. [Portability] Comfortable pen-size ...