Fenris Isle is a large island located in the center of Lordamere Lake. The island is generally considered to be a part of Silverpine Forest, and together with the Dawning Isles, form a broken circle of dry land in the lake. This formation was once the rip of an ancient volcano, long since eroded down by the elements.
Fenris Isle was once home to a thriving military outpost of the kingdom of Lordaeron called Fenris Keep, ruled by a promising young lord who frequently traded goods via ferry with the Silverpine mainland. When the undead Scourge took the land, Fenris Isle was abandoned, all of its inhabitants either fled or murdered. The island has since been occupied by the Rot Hide gnolls, who have taken the keep as their base of operations. The Rot Hides are led by their treacherous master, Thule Ravenclaw, who has taken complete control of the island and the nearby Decrepit Ferry.
- Fenris Keep and Fenris Isle are likely a reference to Fenrir, the horrific wolf who was the brother of the world serpent and the goddess of hell. Fenrir was bound by the Norse gods on a remote island in a massive lake inaccessible to mortals or giants. He is the eternal foe of Odin the Allfather.
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Fenris Isle may be what's left of Cross Island. Some parts of the island have seemingly sunken.