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It's definitely photoshopped, look at the ground they're standing on, where it fades into the wooded area.

Is there a mirror of the image? Ironically enough, that server is down for the count.

There are trees all around.

Light could be coming from the top (around midday) and be blocked in arbitrary parts by the trees, so one part of the place gets light from the right, while another gets it from the left.

I don't think it's meant to be representative of their surveillance footage.