Prince Durin has ordered the Gabil'akkâ to push further into Gundabad in opposition to the hostile Orc-defenders.
You will automatically travel to Máttugard when you accept this quest.
'Then let us return! The conquest of the Mountain-home will wait no longer!'
Durin ordered Bósi of the Iron Garrison to scout the further reaches of the Mountain-home, and has asked you to meet up with them at the entrance to the Pit of Stonejaws, north of Máttugard.
Bósi's son Bori has gone to search the crypts in the Pit of Stonejaws, and could use your assistance to the north-west.
Bori asked you to search more of the crypts along the westward path, which eventually turns north and slopes upward.
Bori has agreed to meet you by the upper crypts, further north in the Pit of Stonejaws.