Just to expand a bit on my previous post...about the Hexagon
perhaps being to do with teleportation...inter-dimensional travel.
http://www.viewzone.com/evilfire.html
From the above site...
There is a point
off the coast of Western Australia... near ish to the Hexagon...that is
described as a 'natural contact area'. (vortex? natural space-time type
portal?) Suitable perhaps for teleportation....to the Moon and Mars?
And maybe else-where? Perhaps suitable for time-travel?
And here is a picture of Woomera from the same link...
It's at an angle....all those...what-ever-they are.
But it looks like it also could be a hexagon?