Swamp Fever is Left 4 Dead 2's fourth campaign (originally the third, with The Passing DLC shifting campaign order). Swamp Fever spans four long chapters and takes place in Louisiana-type bayous and swamplands near a shanty town called Village En Marais.
Mountain Lab is an Attack/Defend Control Point map. Mountain Lab was a winner of TF2Maps.net's Art Pass Contest, and was released into the game on October 27, 2010 Patch with the Scream Fortress Halloween event.
The fire swamp is an uninviting location.
Camp Green Lake is a juvenile detention and correctional facility located in Texas.