I believe this back door leads to many lost yesterdays. As a matter of fact, I know it does. I found this doorway at the abandon mill with the trucks of yesterday. The inside looks to be some sort of power station for the factory nearby. It's been pretty much gutted, with just traces of ghosted machinery remaining. I didn't venture very far in for fear of the floor giving way. Really, not a fit place for man nor beast.This entrance was a beauty in its day though, I bet.