What are these symbols/markings?

Could someone please explain what these markings actually signify and what their purpose is?
Is this some kind of childish game, a way of marking territory, or perhaps something more cultish? ����?

Are the surveyors actually doing their jobs correctly?

Brandon Harris20 said:Are the surveyors actually doing their jobs?

I see. So that really is what it is.
I had my suspicions, I suppose, but I couldn't say for certain... I mean, I have never personally witnessed this specific type of marking or surveying procedure before. Is that even standard practice?

Situational astrology, I guess.

Brandon Harris20 said:Are the surveyors actually doing their jobs?

Probably, though I've honestly never seen anyone mark things out quite this meticulously before...

The degenerate masses are summoning the unholy.