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The subject, fog, and composition make this. Appears to me to be relatively long lens--200mm?--because of the apparent compression, medium dof f5.6?; There are several of these in Louisiana (and the South). Best guess: Oak and Pine Alley, near St. Martinsville, LA. See www.flickr.com/...
discutant: Old South Gothic: Decaying portico of the Belle Grove mansion, Louisiana, photographed in 1938. Belle Grove, built in 1857 and abandoned in the 1920s, composed 75 rooms and was reputedly the largest plantation house in the South. Photo by Frances Benjamin Johnston, via Shorpy.