'Greetings. I am Burkni of the Iron Garrison, tasked with the reclamation of Bult-kar. Within, there lies a vast store of lumber which we could readily use to begin repairs across Khazad-dum.
'Unfortunately, we cannot claim this storehouse until the intruders within have been dealt with. Perhaps with your aid, we could strike terror into these intruders and drive them out.
'I am certain that these intruders have a leader, someone -- or something -- that holds sway over them. Quickly, enter Bult-kar and dispatch the foe who commands the rest of those within.'
With a foothold established in the Twenty-first Hall, the Iron Garrison has begun the reclamation of the forgotten stockhouses, libraries, and mines of Moria. The lumber warehouse of Bult-kar is one such location.
Defeat leader of the intruders within Bult-kar
The entrance to Bult-kar lies within Mezer-serej.
Burkni has asked you to defeat the leader of the intruders within Bult-kar.
Talk to Burkni at Mezer-serej
Burkni is at Mezer-serej.
With the defeat of their leader, the intruders within Bult-kar have had their morale weakened. You should return to Burkni and tell him of your victory.
The Iron Garrison has created a diversion, drawing the bulk of the intruders from the depths of Bult-kar. They are permitting you access for one hour, during which time you may enter and exit Bult-kar freely to complete the tasks bestown upon you.
However, after the hour has passed, the Iron Garrison will bar access until they can once again muster an offense to draw the enemy from Bult-kar.
Also note, that all mobs inside these instances are random...
You could have a dungeon full of Orcs, or Goblins, or Cave-claws, or Gredbyg.