spoilerish I suppose so I'll go ahead and tag it...
After the Duergar "ambush" by the lake for the first time I actually noticed that one of the "shattered Duergar" corpses is willing to talk so I used speak with dead and one of the questions was about valuables. The corpse indicated that the gnomes were fiddling with some rubble. I didn't see anything revealed nor do I find any rubble around that can be interacted with. Has anyone figured out what this means for is it just something Larian hasn't included yet?
