The Island of Darkness

The Island of Darkness (also known as The Dark Island) is another known landmass and is the sister island of Ninjago. Originally part of the main island, it was split during the battle between the Overlord and the First Spinjitzu Master.

Formation
The Dark Island was once the western part of Ninjago when the First Spinjitzu Master created the land after leaving the Realm of Oni and Dragon. the Oni soon pursued the First Spinjitzu Master to Ninjago, creating a temple deep within Primeval's Eye, where they depicted their origins on the walls of the temple. They would also seal away the Oni Mask of Hatred within the temple, which could only be taken by a being with Oni blood.

Ninjago was a land of light and peace, but that peace was not to last; darkness soon appeared to counterbalance the new land of light. From this darkness, an evil entity known only as the Overlord appeared to challenge the First Spinjitzu Master for control of Ninjago.

When the First Spinjitzu Master battled the Overlord for control of Ninjago, the latter's Stone Army threatened to overwhelm the former. In desperation, the First Spinjitzu Master used his powers to split Ninjago in two, with the Overlord's side becoming known as the Island of Darkness. Later, it sank to the seabed.

Geography
The Dark Island

Locations

 * The Celestial Clock
 * The Temple of Light

Trivia

 * The Dark Island is very similar to its TV Show counterpart
 * After being separated, the Island of Darkness and the Ninjago mainland appear as the symbol of Yin-Yang, to indicate an equal balance between Light and Shadow.