|# of Zones||2|
|Respawn Time||10 days or 30 days|
A Tragedy in Black
The Doors of Oblivion
|Console Location Code(s)|
|On the northwest shore of Lake Ilinalta|
|# of Alchemy Labs||1|
|# of Arcane Enchanters||1|
|# of Cooking Pots/Spits||1|
Ilinalta's Deep is a medium-sized Imperial fort that mysteriously collapsed. It is located on the northern banks of the western side of Lake Ilinalta, within viewing distance of the Lady Stone. It has two interior zones: Ilinalta's Deep and Ilinalta's Deluge.
In the entrance, you will find a shackled skeleton; the knapsack at his feet contains a fisherman's journal that reads "Folks say it's cursed. Whole Imperial Fort just sank into the water one day, and they say the ruins have been haunted since."
 Related Quests
- The Black Star: Help find and repair Azura's Star.
- Arniel's Endeavor: Uncover an ancient Dwemer secret. (radiant)
 Zone 1: Ilinalta's Deep
Past the shackled skeleton in the entrance, you will find a larger room with a balcony that is, for the time being, out of reach. The only passage available to you, on the left, leads to a small library. A necromancer is patrolling the room, with a companion skeleton. If he detects you, the necromancer will call for support from the next room, and a few more necromancers will join the fight. The adjoining room is a kitchen with a cooking pot, food and various ingredients. There is also a human heart on a table in the first room.
Continue through the halls, and you will soon find yourself in a flooded room where a necromancer will be ready to summon a wolf if he spots you. There is a chest along the wall on the dry side of this room, and if you dive into the flooded part you will find a submerged bedroom with a second chest and a copy of the Alteration skill book Breathing Water floating up to the room's ceiling on the left as you walk into the room.
Shortly thereafter you will enter a room with an alchemy lab and arcane enchanter, there may also be a pair of necromancers there as well. A copy of the Enchanting skill book A Tragedy in Black can be found on a table near the work stations, and you can access a couple of side bedrooms (one with an apprentice lock) holding several magicka potions and an unlocked chest.
A longer corridor will lead you to a partially flooded room with a raised bridge. There is a bookcase on your right as you enter his room with a couple of magicka potions. You will have to face a few skeletons and a bandit on the side of the room you enter, and a higher-leveled necromancer on the other side of the water. You will have to jump in the water and cross to the other side in order to find a chain that lowers the bridge. A chest with leveled loot is found nearby and, if you check underwater, an adept-locked door provides access to a small closet with a second chest and a few potions, a coin purse and some loose gold.. The chain lowering the bridge in this room also opens the passage to Ilinalta's Deluge, the second zone of the fort.
The corridor ahead leads upstairs to a barred door onto the balcony in the entrance of the fort; the door is barred from this side so it can be easily opened. There is also an apprentice-locked door on the way, providing access to another room containing a couple of barrels containing ingredients and two bookcase, one of which contains some potions. Once you are back into the entrance room, you will notice a stone column has fallen on your left forming a ramp that allows a quick shortcut between the main entryway and the balcony. Opposite the entrance, on the balcony level, a door is now available to enter the next zone of the fort.
 Zone 2: Ilinalta's Deluge
This level opens into a large room with a small storage room to the east, as you approach you will hear two necromancers discussing a failed experiement and the requirement to find someone to sacrifice, they are both sat at a table opposite where you enter this room. There is a copy of the Conjuration skill book The Doors of Oblivion on the northwestern table. Additionally both tables in this room contain some soul gem fragments, soul gems and a magicka potion. Between the tables is a cupboard with a soul gem and normal clutter, there are also two barrels containing ingredients. In the northwest corner is an unlocked chest. In the small storage room are three bookcases, one contains several magicka potions, one contains a couple of healing potions and the third just clutter. Follow the corridor down some stairs to an unlocked door. The next hallway has a leveled necromancer and skeleton patrolling and contains six prison cells, four of which have adept-level locks and none of the six contain anything. The following room contains another leveled necromancer and is partially underwater. It has a raised area the necromancers have been using for sacrifices, there are quite a few broken skeletons you can search for gold and bone meal. Curving stairwells lead up towards the next room, or down into the water. At the bottom of the water are a couple more lootable skeletons. The final room contains Malyn Varen's skeleton, Azura's Star, Malyn Varen's Grimoire, a couple of lootable skeletons and a chest along with a ladder that leads outside to the top of the mostly intact tower in the lake.
- Even after starting the quest The Black Star, the path to Ilinalta's Deluge and Azura's Star may be blocked by a large boulder. Exit and reenter the dungeon and it should disappear, allowing access to the door beyond.
- The entrance hatch to Ilinalta's Deep may be missing (i.e., your quest arrow points to stone).
- A possible fix is to fast travel to another map marker (Fort Greymoor to the northwest is the closest), then fast travel back to Ilinalta's Deep. The entrance will be accessible this time.