Sanctum
From Wikitroid, the Metroid wiki
This is about the room in Phaaze. For the room in Dark Aether, see Sanctum (Dark Aether).
The Sanctum is the final and the deepest room of Phaaze in Metroid Prime 3: Corruption. It is right below the Genesis Chamber. It is where Aurora Unit 313 was implanted. The room has a giant hatch covering the ground. It opens up for a second right after Samus falls into the room to let Dark Samus out. the room is surrounded by giant walls of Phazon. After Samus defeats Dark Samus the hatch opens up completely and the walls fall down. Then Samus must face Aurora Unit 313.
