The Impassable Mountain Terrain is a mountainous area of RuneScape Classic located west of Ardougne and north-west of Yanille. Although players cannot traverse it overland, they must pass under it during the Underground Pass quest through the tunnels of the same name. In RuneScape 2 it is known as Arandar and leads to the elf land, Tirannwn, to the west.
|Location on World Map|
|Tree Gnome Stronghold|
|Unknown||←||Impassible Mountain Terrain||→||Ardougne|