The theblackfog_130809_2011.zip file you have requested: Maps Levels Missions / Campaign Maps / Left 4 Dead Campaign Map Black Fog - 2.57mb is not available. Perhaps try browsing all files for the game Left 4 Dead and upload any files you want to share or are missing. This is the only information we could locate:
I'm not sure how much more work I'll do to this as I'm going to focus on making a new survival map. Black Fog...I added a different map. It is in a very early stage and not complete, you can call for rescue but none comes.