Round Engraving and Channel Mark

[defineci]

[url=https://www.hizliresim.com/9ayotfc][/URL]
[url=https://www.hizliresim.com/tk53oya][/URL]


What could this be? Location Turkey

 

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[ToddsPoint]

I looks like an animal burrow under a large rock with a crack. Gary

 

[crashbandicoot]

The holes in the rock look like 57mm Armor Piercing.