Well after spending the week at the ruins and having banged my head against far too many Obelisks, I decided to do a map of my own.
I've rotated the map so its aligned with south at the top, north at the bottom.
In my time here, I've observed that the run sets slightly to the left of the moon, so if I stand at Group A (or along the long mound leading to it), I see the sun setting behind the beacon at Group A. If I stand in the centre of Group A and look at Group F, I will see the Moon rise out of Group F. If I turn and look at Pyramid A, I can see the planets Pole Star, and if I go to Pyramid A and begin to ascend it, it is at the same angle as the Pole star. If I stand at Group F, I see the Moon set over Group A.
I've highlighted this alignments on my map, as well as noting a few curiosities
The purple line, which follows the line of the hill at the northern end of the compound, crosses the centre of Group A, I'm not too sure but this could represent the galactic plane.
The 2 green lines, follow the edge of the plateau on which Group G is situated, both lines meet at Group A, touching Obelisks A8 and A10, and one continues through a Tablet location, the other through the beacon located outside the compound.
http://i.imgur.com/yUz1irE.jpg
In this map I've highlighted just the artifacts and beacons, and drawn lines from the centre of Group A to each artifact, which to me appear to be a focus, its possible that the yellow dots indicate stars, the blue beacons could indicate additional ruins. Its possible that the orange line length are proportional to the distance from our main star. I've left the purple line in just in case it is related to the galactic plane, and may help in identifying possible additional ruin sites
http://i.imgur.com/x9QEDLS.jpg
that's the result of what I've found so far, I'll continue to do digging but I imagine the star locations will require maths, and there will be someone else here more suited to that, but I'm convinced that the structure of this site is designed as a map, so I'm hoping that someone will see this and maybe give them a brainwave.
The sun will be rising in the next day or two, will be interesting to see if there are any further alignments, I'll certainly be there for sunrise, and will post any interesting developments