Island of Bulba-Slopp

 is a lair quest in the Undermountain Campaign and the final quest in Twisted Caverns. This quest becomes available upon completion of both the previous quest, The Fourth Master, and the fifth Undermountain campaign task, Twisted Caverns Untwined.

Steps

 * Defeath the Aboleth Go to Island of Bulba-Slopp
 * Island of Bulba-Slopp
 * Meet with Sloopul
 * Reach the Island
 * Defeat the Aboleth's Ambush
 * Reach the Island
 * Find the Archpriest
 * Defeat the Aboleth
 * Collect the Tentacle
 * Talk to Archpriest Noogaloop
 * Return to the Arch Gate
 * Approach the Gate to Wyllowwood
 * Talk to Jhesiyra
 * Activate the Arch Gate