Hello,
You'll have a quest to talk to Nihaz, if you don't have it right now, it means you did not finish all the previous quest line.
Did you finish Frontier (the zone after Isle of Revelation/Twilight/Revelation again) ? The zone where you have to go through a Ancient Portal at the end.
PS : What is "Cavern quest" for you ? Tka Rik ? Or the one with Faceworms in it ?
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