They're being held captive while the iron dwarves prepare for war. We haven't the men to charge in after them, and Raegar's too busy fantasizing about defeating the irons to be of much help.
It falls to you, <name>. Any of the irons or their servants could be carrying the keys to the cages holding our men.
Did you locate the missing prospectors?
<Mountaineer Kilian listens as you relate what the captive prospectors told you.>
They mentioned Kronus and a war against stone giants? You're certain?
So Raegar's instincts were right. We have to find a way to get in there and learn more about their plans.
Both Prospectors Torgan and Varana are in cages outside the various buildings of Dun Argol. Prospector Gann is inside one of the buildings.
- Prospector Gann[76.5, 55.4] says: Thank you for rescuing me, but the others are still held on the tiers above!
- Prospector Torgan[76.3, 58.5] says: Thank goodness! I was worried they were going to press me into service in their war against the stone giants!
- Prospector Varana[76.0, 61.1] says: Those irons are crazy! They keep talking about serving their 'master Loken' but from what I can tell, only a few receive orders from him.
That the quest completion text refers to Kronus is probably a continuity error. It appears that Prospector Varana originally mentioned Kronus, but was later patched.