Hidden away in the far reaches of Google Earth are places that to you and us are simple blocks of pixellated colour, there are no hills, lakes, or forests.
The reason? They've been censored. Whether they're top secret government airfields, non-recognised land masses or spy training facilities they've all been given the same protection from well, us.
In many cases Google isn't actually obliged to censor the locations, especially if they're from publicly available source material, however in some very rare cases the tech giant will intervene and lay down the pixellated map of secrecy.