posted on Jun, 8 2011 @ 08:53 AM
I had a thought about these markings, could these have been made at the quarry where the blocks were taken from, possibly indicating which block to
take next, or something similar? Because the shafts are so narrow, I would be hard pressed to believe that the markings were made after they block was
placed. If indeed they were made prior to being placed, such at the quary, there could be more of the markings that are not seen, because the markings
would be hidden by other connecting blocks.