In J. R. R. Tolkien 's fantasy world of Middle-earth , the Misty Mountains (also known by its Sindarin name of Hithaeglir —misspelled as Hithaiglin on the original Lord of the Rings map—and as the Mountains of Mist ) is a fictional mountain range , running for 795 miles (1280 kilometres) from north to south, between Eriador and the valley of the Great River, Anduin , and from Mount Gundabad in the far north to Methedras in the south.
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