Located on the edge of Allegheny National Forest, the address of the farmhouse is 115 North Hill Road. The freight company Richardson Atlantic has railroad tracks that run alongside the farm. The Daughtery family currently owns this farm and grow corn on the land, as well as harvest hay. The farm has a main two-story house, a garage that houses the tractor, and a barn that may have had livestock in it.
CEDA initially set up an evacuation center at this farm since it is the only building in the immediate area; however, once the military took over, they set up an outpost at the farmhouse and designated it Evacuation Outpost Echo. It was used to provide passage to the northeastern safe zone (or first, to Millhaven). The soldiers put up notice signs telling refugees that they are about to enter a military outpost zone and to listen to military personnel; however, the soldiers were killed by the infected. Instead of the soldiers at Millhaven sending another squad or platoon to the farmhouse, they decide to play a tape loop over the radio and await to see if anyone answers.
The Survivors enter the farm by the small cliff near the Richardson Atlantic railroad tracks. Once they enter the cornfield, they startle a murder of crows, which alerts the horde. Once the horde settles down, they head towards the farmhouse and get ready to be rescued by the military. Once they inform the military of their position, Lt. Mora joins Rescue 9 in the armored personnel carrier to go and rescue the Survivors. Once they pick up the Survivors, Lt. Mora and Rescue 9 takes everyone to Millhaven.
The farmhouse and surrounding cornfield bear a strong resemblance to the family farm in the movie Signs, which also takes place in Pennsylvania.
While it's clear that Left 4 Dead is set in the United States, the APC seen in this map's campaign is based off a German-made TPz Fuchs, not an American one like the Cadillac Gage Commando for example. This is because it is possibly the U.S. Army's CBRN (Chemical, Biological, Radological, & Nuclear) Reconnaissance Vehicle, the M93 Fox