Miners symbol, maybe?

[Mark L]

Recently visited a local landmark that is now owned by a mining company.
Found this marking on a rock in the middle of a river.
Is it a symbol that means anything to anyone?

90330

[WhoDo]

Just a guess but maybe a geologist's marker for a test drilling?:confused013

[MarkChap]

Close, it is juts a simple survey marker.
The surveyor marks the "spot" from which survey readings are taken, there can be no mistakes when there is a physical marker if they need to go back and check any readings

[Wayne]

Yep surveyors mark.

[outstar79]

....an ancient painting of a mammary gland?

[Mark L]

Thanks Mark and Wayne.


....an ancient painting of a mammary gland?

That comment deserves a comment in reply.

[ameerat42]

And so, for them - presumably the miners - a sure sign of imminent milk and honey.
(Editor's note: not a few beekeepers - and some of renown - augment their daily bread in this locality.)