We've seen a lot of fan-made maps that try to capture the geography of George R. R. Martin's A Song of Ice and Fire series, but none have been quite so detailed as this monstrous map by one serMountainGoat — a map so thorough, it's impressed Martin himself.
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Map of The Seven Kingdoms of Westeros, As depicted in George R.R. Martins Fantasy Epic "A Song of Ice and Fire." Pretty nifty.