In the area where I am located we had the Turkish rule for many years and most of there signs are just like thisI see nothing unusual in your close-up or of the boulders. They are typical of rock out croppings I come across all the time while hiking here in Penna. What do you see in the rocks?
Where you located Tridini?Might help ID to know.In the area where I am located we had the Turkish rule for many years and most of there signs are just like this