Candúr is concerned with the number of Orcs residing within Skoironk.
'Many Orcs reside within the caverns of Skoironk. Too many for my comfort. You and your allies should defeat the stronger foes, if you are able - and quickly, before the Host of the West arrives!'
Mordor bruisers can be found within Skoironk.
You should defeat Mordor bruisers.
You should return to Candúr, who can be found at a small Ranger outpost hidden in the Slag-hills.