Bósi is concerned about the frozen northern reaches of Clovengap, and believes you should investigate to learn if it has become a lair for Hrímil Frost-heart.
'It seems the northern reaches of Clovengap have been iced over and frozen, a sure sign Hrímil Frost-heart has chosen that place for her lair, or that she has spent time there for another reason. What that might be I cannot guess, but I deem it important we learn what we can of it!
'Investigate that frozen place and keep a close eye for any clues that might shed light upon her intentions in Clovengap! Did the Angmarim bring the Black Stone Anvil there, hoping to present it to the dragon? I cannot see what use she might have for it, but the minds of dragons have always been impenetrable to the dwarves, and to me in particular!
'To reach the frozen river-bed in the northern reaches of Clovengap, make your way through Frósthel on the left side of the Ladder-gardens.'
The northern reaches of Clovengap may have become home to Hrímil Frost-heart, and Bósi wants you to investigate... carefully. He suggested you make your way through Frósthel on the left side of the Ladder-gardens to reach the frozen river-bed.
A disorganized array of Orkish footprints has drawn your attention.
Bósi is in the south-west portion of Clovengap, waiting to hear what you learned during your investigation of the frozen reaches.
Bróin asked to meet with you atop the terrace to the west, a short distance away from the others.
Bróin has asked to see the red pebble you found.