Lair of the Tarrasque

Like all other planets, a Tarrasque exists on Okarth. There
are actually no recorded mentions of the Tarrasque rampaging across the world,
so many do not actually believe the Tarraque exists. Some scholars chalk up any
theoretical accounts of the Tarrasque to The Ravager. These individuals are
wrong, however, because Okarth does indeed have a Tarrasque.
The
Tarrasque sleeps in a massive cave in the Gates to the East. Very few
actually are aware of this. The barbaric people living in the Eastern Wastes
tell legends of the deity of darkness and evil being sealed away in the Gates
of the East, perhaps a symbolic allusion to the Tarrasque. Whether this was
intended or not is not known.
Should the Tarrasque ever wake from its slumber, the Eastern Wastes, the Shou Empire, or Altathair would be in the most immediate peril, depending on which way the legendary engine of destruction chooses to travel in.