Key locations in Ultima Underworld II

There are not many keys in Ultima Underworld II and the game does have a keyring, allowing much easier inventory of the various keys encountered. Nonetheless, here a complete overview of the keys, complete with notes about special properties of said keys.

Also, keys with no fitting lock do turn up (especially on Tarna). Those keys are not listed here.

Britannia

Key	Where is it found	What does it open	Notes
	Dupre gives it to you after the first meeting with Lord British	The door to the sewers underneath the castle
	Charles gives it to you after your successful return from the Scintillus Academy	The locked door at the south of level 3	Besides the red haunt, you will find treasure (more below).
	On level four on the the ground of the small alcove behind the reaper	The doors to the armoury on level 2	Since the reaper is very strong, just getting the key and then running away is the best solution.
	Dropped by the red haunt on level three after killing it.	The nearby chest	In the chest there a second moonstone (enabling gate travel) and the only NOX rune stone in the entire game.

Tarna

Key	Where is it found	What does it open	Notes
	Janar has it. Either demnand the keys from Borne and give Janar his password, or just kill him	The door to the cell of Garg the troll The door to the cell of Milenus
	Borne’s remains after either killing him or letting Garg do it	The door to the armoury of the tower
	Borne’s remains after either killing him or letting Garg do it	Borne's chest The chests in the armoury of the tower

Killorn Keep

Key	Where is it found	What does it open	Notes
	In one of the supply barrels on level 2	The door to the engine room	Ogri tells what the key is good for. You don't actually need the key, as standing close to the door and then using Altara's Scepter is enough.

Anodunos

Key	Where is it found	What does it open	Notes
	In the possession of Sentinel 868, and he will only release it upon his own destruction	The door to the maze control tower of Anodunos
	Behind the maze, see: Anodunos dam control puzzle	The door to the floodgate controls

Scintillus Academy

Key	Where is it found	What does it open	Notes
	On level 4, northwestern corner	One of the two doors to the exit of the level
	On level 4, southeastern corner	One of the two doors to the exit of the level
	On level 5 after flipping all switches with the pole	The door to the exit
	On level 6, after you created headless with pressure plates and then take the key (arrows meant for you kill the headless)	The door to the labyrinth leading to the exit
	On level 7 in a small alcove at water level, part of the bullfrog puzzle	The door to the exit
	In one of the testers rooms on level 8	The door leading to the high-security vault in the void The first door in the vault itself	Not needed to win the game, but valuable, including unique rune stones and weapons.
	In the fire area of the secret vault, guarded by a daemon	Used to open the door to the exit moongate	If you decide to avoid that area by using the Bounce spell to cross the big halls, you will not need this key.

Rhiannon

Key	Where is it found	What does it open	Notes
	After talking to Silanus, release drain control in the south, then go to watery area in the northeast. Search the walls there for a hidden switch; its activation then reveals the chamber with the key	The door of Morphius to Lord Umbria	It is entirely possible with the key to avoid Mophius and then to sneak by Lord Umbria. But Lethe's attack will attract their attention.
	Held by a Despoiler in the swampy area to the east after defeating Lethe, which has to be killed	The door to the lever for the final door to the tomb of Praecor Loth

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Key Locations
Games	Ultima VI ☥ Ultima Underworld ☥ Ultima VII ☥ Ultima Underworld II ☥ Ultima VII Part Two ☥ Ultima VIII ☥ Ultima IX