Lyric discussion by jpainsworth 

im thinking that this is the dear hunter leaving on a boat and heading out to a new life, or the war which i think is what the next album is about. hes saying goodbye to the memories and pain of the death of this mother and his love for miss leading.

whatever it is its definately him leaving on a boat. "Salt in the sky in the sweet summer air while mammoths depart" obviously the salt of the sea. and maby the mamoths departing are large boats departing from the docks as he approaches.

"Goodbye, my eyes shed heavy tears" him saying goodbye

"Ebb to the left flow to the right The exit's unflawed The boys on the train" more references to boats, the ebb and flow of the sea being his exit from his pain. and the boys on the train refers to "the oracles on the delphi express" where the "oracles" which i think of as a gang on the train say "If you flee from grace your souls can not be saved Big steam ships, exits illustrate the flaw" and he is reflecting on them saying these things to him on the train as he approaches he boat.

the last bit is just a reference to the story so far and the main theme "the flame is gone but the fire remains" with him as the fire.

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