I don't see anything that looks like UFOs (unless you consider only a two dimensional view of a three dimensions object, that way, round things that
be considered as looking like the typical, disk-shaped UFO)or crop circles, and I think that underground bunkers are supposed to exist in air force
As said by ZombieJesus
, most (if not all, I have to seen all the images) of the round structures are craters, most probably resulting the
bombing tests, as you can see by the shadows, when compared with the shadows of the buildings.
And as paradiselost333
said, Google Earth images are not "real time", far from it (the images from where I live are something like two years
old), and Google does not have a satellite that they use to take the photos, they use commercially available satellite photos, photos that
with enough money can buy.
It would be helpful if you had marked some of the things that you find interesting, you have to remember that people think in different ways (and the
crater situation shows that perfectly
), so what you may find obvious we may not even noticed (or vice-versa).
PS: thanks for thinking about JPEG artifacts, but you can (and should) use PNG instead of BMP, PNG was created for Internet use (all browsers show PNG
images, not all show BMPs)and has much higher compression ratios than BMP.
Edit: I forgot to say that I think that the "grey square section" that you talk about is just the result of that area have been photographed in a
different time from the surrounding area, it is very common on Google Earth, just look around and you will see it.
[edit on 29/6/2009 by ArMaP]