Yes, I dug up good ol' Bleep's Project.
To those of you who were here around Spring 2008, you may recall this project. It was a special map made by Mr. Bleep and a few others for hardcore zombie action (see picture below).

The save might look a little different (more completed).
As you can see the map has many twists and turns which means there could be an ambush waiting around every corner.
The map also features a few big rooms which could be spots for hordes or supplies.
This is a picture of the first floor only. There is supposidly a second floor (stairs can be seen in top right corner), but I could not find any pictures.
This map would also be good for Versus mode. Since the ifected could hide around almost every corner.
Now the map doesn't have a sort of "trail" to follow. It appears more like a regular building. Meaning I could do one of two things since I plan on fixing it up.
1: I could block off some doorways with various debris.
or
2: I could make it an all out slaughter house with various objectives.
Now I'm informed Mr. Bleep hasn't given up on this project, he is at college and has so much to do that he hardly has time for it. I dug up this topic so others could see it. There is also a download link which I'll post now.
http://www.megaupload.com/?d=OIZ288NWAnd for those of you who want to view the original posting of this;
http://forum.blockland.us/index.php?topic=35179.0If anyone has any questions or wants to help please leave a comment.