The final scenes in the movie were filmed along a permanently closed section of PA Route 61 in Centralia, Pennsylvania. An underground mine fire which began in 1962 forced the closure of the highway and the relocation of the residents in the 1980s. Debris had to be cleared away so as to make the roadway look usable. Gaps in the asphalt released a sulfuric odor and wisps of white smoke. Care had to be taken to keep it out of frame.