This once abandoned factory is now occupied by the Horzine blue-collar workforce. For years Horzine has kept this facility a secret, and kept it off public records. They've been producing chemicals and weaponry for their private military and stock piling for something evil... more evil than what they've already unleashed on the world.
This map is a 1 to 1 port from the Killing Floor 1 version.
The map has however received a major bump in graphical quality in order to show off the power of the newer Unreal Engine 3 platform.
Lighting as well as material shaders have been improved to meet current day AAA game standards.
(At least with what's possible with UE3.)
Why is the map as big as it is? This is a pretty long read, so get comfy.