Slitherswamp

Slitherswamp was the eighth level of Undermountain.Originally a collection of temples dedicated to evil yuan-ti gods, the yuan-ti were wiped out by nagas. In light of this event, Halaster Blackcloak brought a bullywug tribe, governed by a cruel death slaad.

Inhabitants
The Ssethian Scourges

Three spirit nagas who fought the yuan-ti formerly on this level, eventually emerging victorious. The nagas maintained a stable of thralls, controlling them with a rod of rulership.

The Blacktongues

Sent in by Halaster Blackcloak, this bullywug tribe had acted quickly, enslsving four carrion crawlers and a hydra. The death slaad king's control gem was kept on level 9 - Dweomercore, and Halaster Blackcloak forced the slaad to rule over the bullywugs.

Karstis of Dweomercore

The mages on level 9 - Dweomercore - had sent a spy of their own - a mage named Karstis.

Leaving Slitherswamp
The following ways could be used to leave Slitherswamp:
 * A tunnel in the north-west part of this dungeon up to level 7 Maddgoth's Castle.
 * A tunnel in the south-west part of this down to level 9 - Dweomercore.
 * An arch gate in a three-fork 5-meter high cave, a mirror gate to level 10 - Murial's Gauntlet.
 * A standing gate to level 11- Troglodyte Warrens.