just one curious observation from Google Earth/Maps in these locations is that there are no vehicles on the roads, even in those towns close by.
And what are these places?
1.
http://maps.google.com.au/maps?hl=en...h&z=16&vpsrc=6
2.
http://maps.google.com.au/maps?hl=en...h&z=16&vpsrc=6
3.
http://maps.google.com.au/maps?hl=en...h&z=17&vpsrc=6
At first I thought they were coal mines, then I thought perhaps archeological sites?
This looks like a
coal mine:
http://maps.google.com.au/maps?hl=en...h&z=17&vpsrc=6