Pools of Warding
From NEStalgia
The Pools of Warding make up the outer section of the Black Sanctum and can be accessed by entering a portal on the eastern side of the Sanctum. Unlike with the Keep, if a player resets their daily quests they do not lose access to the Pools of Warding. Two of the seven Black Sanctum quests, The Spell of Warding and Eye See What You Do There, require a player to travel through the Pools in order to be completed. Another quest, Ghost Hunt, occasionally requires a player to do the same due to where that day's Specter is located.