This is a giant forest overgrown with mushrooms that were destroyed by magical energy released in the past when the Elves and Men fought among themselves. Here was a fierce battlefield where Elves and Men fought for control of the continent, but were defeated due to the powerful magic used by the Elves. As a result of the concentration of excessive magical energy in one place, the existing ecosystem was destroyed, and the place turned into a “rotten swamp.” The spores emitted by this rotten swamp spread throughout the surrounding areas. In order to prevent and stop the expansion of the “rotten swamp,” the magicians of the Ivory Tower erected a number of towers with a magical force field.