Nezznar's servants occupy this cavern, guarding against undead incursions and carefully sifting through the rubble. The Black Spider's divinations suggest that some valuable treasure is hidden at the bottom of the rift that was created when this area was destroyed.
A wide rift fills the eastern half of this cavern. A stream pours out of the west wall, then tumbles down into the rift and flows out again to the north. Several ropes are secured to iron stakes along on the western edge of the rift, leading down to the chasm floor.Three bugbears are stationed here. Two of them are clearing rock on the rift floor while one more stands guard in the western half of the cavern. A doppelganger named Vhalak supervises the operation in the guise of a male drow. If a fight breaks out in the main cavern, the two bugbears in the rift climb up the ropes to join the fray. Rift. The rift is 20 feet deep. Climbing up or down without using a rope requires a successful DC 10 Strength (Athletics) check. A creature that fails the check by 5 or more falls and takes 1d6 bludgeoning damage per 10 feet fallen, landing prone at the bottom.
If two or more bugbears are killed, the doppelganger tries to retreat to area 19 to warn Nezznar.
Nezznar's divinations are accurate. Buried under heavy rubble at the bottom of the rift is the crushed skeleton of a dwarf wearing gauntlets of ogre power. The remains are hidden from view but can be found with a successful DC 20 Wisdom (Perception) check. Each character searching can attempt one check per hour.