So I got into the goblin stronghold and found out the druid Halsin was hauled off to some 'pits' supposedly. After wandering around a bit, I didn't find said pits and decided to go ahead and off the leaders. So after clearing the place out, I kept searching but never found him. Online spoilers told me he was in the warg pens, but when I went there, everything inside was already dead and no sign of him either. The pens were the last location I found inside the stronghold as I didn't spot the door until I had killed everyone and got to a more thorough search of the premises. So what now? The dude has vanished. How can I rescue him if he isn't around?