In J. R. R. Tolkien's fantasy world of Middle-earth, the Misty Mountains are an epic mountain range, and one of the most important features of Middle-earth's geography. The mountain-chain is less well known by its Sindarin name of Hithaeglir (mist-peak-line)—misspelled as Hithaiglin on the original Lord of the Rings map—and as the Mountains of Mist or the Towers of Mist. The range stretched continuously for some 900 miles (1440 kilometres) across the continent of Middle-earth.