Allegheny National Forest

Allegheny National Forest is the main setting for the survivors in the entire Blood Harvest campaign in Left 4 Dead.

History
This thick forest is located in the north-western part of Pennsylvania and is part of the state's national forests and parks. People would be able to go camping or hiking in the forest as the terrain and landscape suites the outdoor activities perfectly. There is also a large ridge/gorge in the park and connects the area by an old fashioned rope bridge. Richardson Atlantic also has warehouses, railroad tracks, and property that runs through the national park and near the edge of the forest is a farm owned by the Daughtery family.

Current Status
The forest is completely deserted and empty except for the infected. It was extremely difficult for CEDA to evacuate refugees from this area so they placed evacuation notices on the park notice boards informing people to head to Daughtery Farm. When the military took over all CEDA operations, they continued to use the farm as a staging area for evacuees (to be taken to Millhaven) however, the soldiers that remained there were killed by the infected. Instead of sending another platoon out to the farm, they used the radio and played a tape-loop until someone responded in need of aid.

The survivors start off in the middle of the forest at there own camp site. They move towards the gorge and cross the bridge to try and reach the Richardson Atlantic building. Once there, they are told by graffiti to follow the tracks to the Echo base and the military outpost. They follow the tracks through the forest and use the railway company property to eventually get to the farmhouse where rescue awaits them.