The Underground Pass is a dangerous network of tunnels that run underneath the Impassable Mountain Terrain. The player must traverse these tunnels during the Underground Pass quest during which it is learned that an evil mage named Iban has built a Zamorakian Temple within these tunnels, infecting it with evil. The tunnels end at the Well of Voyage which must be restored before anyone can pass into the lands beyond. However, the well is only restored in RuneScape 2, leading to the land of the elves, Tirannwn. The entry location for the tunnels is in West Ardougne.