Earth rune (The Slug Menace)

An Earth rune is a special type of earth rune used during the Slug Menace quest. It is made by using a blank earth rune on an Earth altar in the normal way and is used to unlock a mysterious door in the newly discovered shrine beneath Witchaven. In order to unlock the door the player must also have made a special air rune, a special fire rune, a special mind rune and a special water rune.