JB: So the only significant points are the two you chose yourself which isn't evidence of anything.
SC: See the image below. It shows ten points (yellow dots) along the so-called 'Lehner Line'. This could not have been achieved without the use of a grid of some kind on the ground (and a plan) since there would have been very little, if any, line of sight. Much in the same way it has been proposed the Nazca lines were laid down over long distances witht he use of a small plan and a ground grid of some kind.
(Map Source: Giza Plateau Mapping Project)