On the border with Morrowind, the Shadowfen region has had more contact with Tamrielic civilization than most of Black Marsh, due primarily to the activities of the Dunmeri slavers who once operated out of the city of Stormhold. Now the Argonians are back in charge.

Zones within Shadowfen:

• Arx Corinium (Dungeon)
• Cradle of Shadows (Dungeon)
• Ruins of Mazzatun (Dungeon)