From the journal of Kildrak Stoneheart
Having defeated the ugly, brutish umber hulks I convinced the party to delay our return back up the shaft that dropped us down here until we had at least explored the immediate vicinity. We were immediately rewarded as we found the disgusting remains of many an umber hulk meal, and within the remains we found the remnants of what these poor victims had on them, including a fair amount of good and jeweled dagger. Further exploration of these lower caves proved less fruitful as we traveled toward a rushing air sound that became unbearable with the noise along with a scent of sulfur and increasing temperature. Examining the map revealed that we were heading toward the Hellstew, which seems an appropriate name from the smell of it.
We returned back to the upper tunnels and proceeded towards our targets only to once again be confronted with the scent of sulfur; however without the rushing air sound it was more manageable at this level. Eventually we entered a large cavern that was illuminated with a vivid blue color, and which had a rope bridge running across it to a massive stalagmite in the middle. Looking below the bridge we could see where the blue light came from, swirling eddies of shifting, shimmering blue floating on the surface of the waters that form together to create the Hellstew. The beauty of it was mesmerizing, particularly when the heat from the thermal activity would cause a bubble of fluorescent blue to float upwards and burst in midair to light up the whole cavern.
We were on a mission, however, so we proceeded forward across the bridge to the stalagmite and across the bridge from the stalagmite to the other side of the cavern. As we approached, it became obvious that this was the entrance to a Duergar city built to mine the minerals in this area, and when we finally reached the other side we found that they were prepared for our approach. Two duergar appeared from behind pillars and got the jump on us. Distracted by the appearance of these foes, who focused their attacks on me, we didn’t see the two duergar flesheaters who appeared as if from nowhere and laid vicious blows on Nicholas and Torrin before we had even prepared our initial attack. While I traded blows with the duergar hammer wielder before me, the rest of the party fought as strongly as usual against the other duergar. In the blink of an eye Nicholas had landed critical shots on 2 of the duergar and Perion finished off my foe. That left only 1 flesheater who was smart enough to surrender.
After a careful interrogation, we were able to learn that the duergar of this city have been told by their citadel Glastezé to follow whatever orders the tieflings provide them. Torrin and I were also able to scare him enough to learn of an additional entrance to the city from the adjacent cliff face. It looks like it is time for a climb.