I wonder how many of those are from video games? Pretty wicked though.Interesting topic.
I tried an image search for "apocalyptic" and found a lot.
For starters try the following:
Sci Fi Post Apocalyptic Wallpaper
Free Tdk Post Apocalyptic Wallpaper - Free Wallpapers
Free Post Apocalyptic Bridge Wallpaper - Free Wallpapers
Apocalyptic sunset Moscow - Free desktop wallpapers download
Free Post Apocalyptic City Wallpaper - Free Wallpapers
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