The Iron Mountains or Ered Engrin were an immense mountain range in the north.
Of old the Iron Mountains connected the Blue Mountains (Ered Luin) of the West to the Red Mountains (Orocarni) of the East, but in the wars between the Valar and Melkor the mountain range was distorted.
After the War of Wrath the Iron Mountains were broken and disappeared for a great part of their length. Remnants of the range in the Third Age included the Mountains of Angmar in northern Eriador, as well as the Ered Mithrin and the Iron Hills of northern Wilderland.
|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