The Grey Mountains were the last remnants of the wall of the Iron Mountains, which once stretched all over the north of Middle-earth, but were broken at the end of the First Age after the War of Wrath. North of the Grey Mountains lay Forodwaith, or the Northern Waste. This land was known as Dor Daidelos during the First Age, but most of it was destroyed in the breaking of Arda after the War of Wrath.
In the maps of the Second and Third Age, it may look like the Grey Mountains were but a northern arm of the Misty Mountains, but in truth, this mountain range was far older, stemming from the creation of Arda, whereas the Misty Mountains had not been raised until after the Years of the Lamps.
The stretch of mountains west of the Misty Mountains which still formed one range with the Grey Mountains was known as the Mountains of Angmar, another remnant of the Iron Mountains.
The eastern end of the Grey Mountains was split into two branches, and in between lay the Withered Heath, where dragons still bred. After that was a long gap until the Iron Hills continued the old line of the Iron Mountains again. The Lonely Mountain was not part of either range and was entirely separate.
The Dwarves of Durin's folk considered the Ered Mithrin as part of their land as far back as the reign of Durin I. Because of constant attack by both Orcs of Morgoth and possibly Dragons, they were not heavily explored or settled until the Third Age. By the Third Age all Dwarven strongholds had been abandoned or raided by dragons, and the Grey Mountains served only to divide Forodwaith from Wilderland. Very few dwarves remained in the Grey Mountains during the Third Age after the core population left, and the Kingdoms of Durin's Folk most probably reclaimed their halls in the Grey Mountains during the Fourth Age due to the diminished states of Orcs and Dragons.
Other versions of the Legendarium Edit
Another line of Grey Mountains in Middle-earth are seen on the Ambarkanta map: these are a series of mountains which continue the line of the Blue Mountains as the western edge of Endor, but on the southern half of the continent. Since no maps of the entire world exist after the First Age, it is unknown if this mountain line still existed in the Third Age. In any case they do not appear in any narrative.
Translations around the world Edit
|Foreign Language||Translated name|
|Belarusian||Шэрыя Гарах (Cyrillic) Šeryja Harach (Latin)|
|Bulgarian||Сивите Планини (Cyrillic) Sivite Planini (Latin)|
|Chinese (Hong Kong)||灰色山脈 A.K.A. 伊瑞德米斯林|
|Indonesian||Abu-abu Gunung ?|
|Irish Gaelic||Sléibhte Liath|
|Haitian Creole||Gri Mòn ?|
|Kazakh||Сұр таулар (Cyrillic) Sur tawlar (Latin)|
|Kurdish||Çiyayên Gewr (Kurmanji Kurdish)|
|Kyrgyz Cyrillic||боз тоолор|
|Macedonian Cyrillic||Греј Планини|
|Mongolian Cyrillic||саарал уулс|
|Persian||کوه های خاکستری|
|Portuguese (Brazil and Portugal)||Montanhas Cinzentas|
|Scottish Gaelic||Glas Beanntan|
|Serbian||Сиве планине (Cyrillic) Sive planine (Latin)|
|Sinhalese||ග්රේ කඳු ?|
|Spanish (Spain and Latin America)||Montañas Grises|
|Ukrainian Cyrillic||Сірих горах|
|Uzbek||Кулранг Тоғлар (Cyrillic) Kulrang Tog'lar (Latin)|
|Vietnamese||Dãy núi xám|
|Yucatec Maya||Witso'obo' Grises|
|Mountain Ranges of Arda|
Ash Mountains | Echoriath | Ephel Dúath | Ered Gorgoroth | Blue Mountains | Ered Lómin | Grey Mountains | Ered Wethrin | Iron Hills | Iron Mountains | Misty Mountains | Mountains of Angmar | Mountains of Mirkwood | Mountains of Mithrim | Orocarni | Pelóri | Wall of the Sun | White Mountains | Yellow Mountains
|Dwarven Realms of Middle-earth throughout the Ages|
|Years of the Trees:||Amon Rûdh | Belegost | Khazad-dûm | Mount Gundabad | Nogrod | Nulukkizdîn | Blue Mountains|
|First Age:||Amon Rûdh | Belegost | Khazad-dûm | Mount Gundabad | Nogrod | Nulukkizdîn | Iron Hills | Blue Mountains|
|Second Age:||Khazad-dûm | Belegost | Nogrod | Mount Gundabad | Blue Mountains | Iron Hills|
|Third Age:||Grey Mountains | Iron Hills | Khazad-dûm | Lonely Mountain | Blue Mountains | Dunland|
|Fourth Age:||Glittering Caves | Khazad-dûm | Lonely Mountain | Blue Mountains | Grey Mountains | Iron Hills|