The Cave of Terror is a cave under Dragon Mountain created by dwarves mining for gems. After the wizard city on Dragon Mountain was destroyed by giants, the late Lightning Dallows stayed here with his pet dragon Firetongue. After his death, Firetongue is the only one who resides here.

Land of the Dwarves: Cave of Terror · Dragon Mountain · International Trading Post · The Grand Cavern
Land of the Elves: Garden of Eden · Greenwood Forest · Hall of Heroes · Judgement Falls · Kingdom of the Clouds · The Forgotten Mine
Land of the Humans: Sivit City · Spark City · Tepian City
The Grand Ocean: Death Cavern · Death Fang Island · Fire Tower · Kalse Isle · Lava Island · Tidal University
Other: Castle Blood · Mystic Woods · South Desert · Teprya · The Wastes