Garrun told you of a pack of Wargs holed up in some warrens east of his encampment.
'Among the crags to the east, a pack of Wargs have holed up in some warrens. From there, they hunt our patrols and harry our forces.
'I believe we should root out the Wargs and drive them from this place. It would make our movements easier and less noticed by the enemy, I think.
'The warren lies to the east, not far from the northern pass into the Gravenwood.'
The Warg-warren lies to the east from Garrun's camp.
Garrun asked you to drive the Wargs from their warren in the Isendale.
Garrun's camp is west of the Warg-warren.
You should return to Garrun with news of your success.