Yu'biusk

Yu'biusk is the home plane of the goblins, separate from RuneScape. According to Grubfoot's dream, it was originally a cool and wet place, with many plants growing and its inhabitants at peace. During the God Wars, Bandos (referred to as the "Big High War God" by the goblins) brought the goblins to RuneScape to fight for him. The plane became deserted and desolate after thousands of years of Bandos' control over it. During the Land of the Goblins quest, the player travels with Zanik and Oldak through a fairy ring to this now-desolate place in hopes of bringing the goblins to peace. After opening a strange coffin-like box, Zanik disappears and the others are forced to go back through the portal as it closes. Zanik presumably remains trapped on Yu'biusk.