Twisted Caverns

The Twisted Caverns made up the fourth level of Undermountain.

History
Once, it served as the home of a kuo-toa tribe, although they were driven out by an aboleth, Illuun by 1493 DR.

Inhabitants

 * Aboleth: Illuun, an aboleth, along with its pet chuuls and enslaved troglodytes. It had its lair in a body of water in the middle of this layer.


 * Drow: A House Auvryndar drow expedition from level 3 of Undermountain had a base on this level.


 * Kuo-toa: Kuo-toa had lived on this level for years, but were driven out of the lake and nesting area they'd previously inhabited by Illuun. Its presence tainted the underground lair, killing the fish that fed the kuo-toa, infuriating their tribes.


 * Fungi: The caves in the north-west part of this level contained numerous, unique species of fungi, a lot of which, surprisingly, had useful or edible properties.

Leaving the Twisted Caverns
The following ways could be used to leave this level of Undermountain:
 * A tunnel in the north-west part of this dungeon led to Level 3.
 * Cruising down the river that ran through the level led to level 5.
 * An archgate to level 6 sat behind spiderwebs in a cave on this level.
 * An archgate to level 2 was present on this level.