Just looking at the way the stones are laying on the ground I would hypothesize ( French for "wild-ass guess" ) that these symbols had some meaning to the locals. Too much work to have no purpose at all.
Something is wrong here. War, disease, death, destruction, hunger, filth, poverty, torture, crime, corruption, and the Ice Capades. Something is definitely wrong. This is not good work. If this is the best God can do, I am not impressed.
-- George Carlin