After the crash of The Black Orb, at least one Illithid escaped, Vaddisk the Mad. He fled the wreckage, barely holding onto consciousness, only able to save 3 of his precious mind flayer parasites. Stumbling into darkness, he was able to use his Psionic power to get a bodyguard in the form of an Umberhulk. The two burrowed through the Underdark together until he was able to regain some of his strength. After finding a suitable cavern system, he started work to rebuild and start a new hive of Illithids. Using his new thrall, capturing prey was easy, and soon enough there were more Mind Flayers at work.

The hive is located only a few days travel from the crash of The Black Orb, and is nearby to Hjoldal. Vaddisk simply could not resist once again having the strong arms of Duergar in his service.