Andorus
From Multiversal Omnipedia
Andorus is the island that is home to Tula and all of Mer's ecomancers, and the hiding place of the Third Treasure of Rule. It was severely ravaged by the Dark Water and the evil spirit known as the Blight while Tula was away rescuing Teron from the clutches of Bloth, resulting in the death of all who lived there. However, both Tula and Teron were able to use their ecomantic powers while in the Viva Tree to restore Andorus to its former glory.
Comic
By the time Tula rescued Teron from the Maelstrom, it was already too late to save Andorus, which was destroyed by the Dark Water.
Video Game
Andorus is the hiding place of the Third Treasure, and also the stage of the game in which Ren, Ioz and Tula face the Lugg Brothers.