This is the location of Site A:
This is the location of the centre "Z" axis of the Shape - If we work with Mengy's calculations I believe this to be Sol:
This is the location of the intersection where Site F sits:
And this is the representation of the "Z" axis that Site F could be anywhere along theoretically:
I say "Z" axis as I believe that the site at G is a targeting range for proper plane alignment, as Barnard's Loop aligns and fits perfectly in the slot as viewed from Site A - I don't know what the secondary ray (in green) is for:
I am of the opinion that Site A is representative of the current Ruin's Site, as the line running downwards from it indicates the tetrahedron is pointed towards the viewer, thus the plane that Site A sits on is the blue triangle face in the Geomag pictures.