Upon entering, the player spawns on a long bridge which leads to the first heroic boss Red Thorns Talos. Talos patrols around the Central Plaza with two Fallen Legion soldiers. After defeating Talos players will be able to open the Upper Iron Gates by destroying them. Once destroyed another bridge becomes accessible, clear the path until you reach the Mysterious Levers that will be on both sides at the end of the walkway. When an incorrect lever is used a trap is activated and Fallen Legion soldiers spawn in and attack. When players use the correct lever a cut-scene is activated. This allows passage to the Lower Floor Passageway.
Lower Floor Passageway
The Lower Floor Passageway is through the locked gates at the center of the Central Plaza. Players are able to fly at this area to get down to the lower floor (Once the players advance, flying is disabled again.) From here you will progress to the Power Room.
Lower Floor Passageway
Power Room
Power Room
In order to open the gate that leads to the boss, players need to use the Power Room lever. Ascend the ramp that leads to the Power Room, take a right this direction will lead players to the Power Room lever. After the lever is activated the gate will open, which leads to the non-optional heroic boss Black Shadow Morrigan. Upon her death activate the Power on the wall behind her. Then back track to Control room.
Control Room
In order to open the gate that leads to the boss, players need use the Control Room lever. Ascend the ramp that leads to the Control Room and take a right. This will lead players to the Control Room lever. After the lever is activated the gate will open, which leads to the final heroic boss Executioner Mercurius. Upon his defeat the dungeon is cleared an exit shrine will appear.
Control Room
Summoning Room
Summoning Room
The Summoning Room is an optional area, it is where Voknos can spawn if he is in that particular instance. If Voknos did not spawn then players will face an optional Elite mini boss called Wandering Kettle. (Wandering Kettle can drop Oblivion Bones.)
In order to open the gate that leads to the Summoning Room, players need use the Summoning Room Lever. Ascend the ramp which leads to the Summoning Room and take the first right. This will lead players to the Summoning Room lever. After the lever is activated the gate which leads to the Summoning Room will open. The path will lead to either Voknos or Wandering Kettle.