Evidence supports Gwilum's beliefs that the Warg-riders plaguing Carreglyn are in fact servants of Saruman the White... and that his own rulers are in league with them.
'Wargs are foul creatures... more than half demon, they say. Combine them with goblin-riders and they become a terror.
'Will you go to their camp to the north and defeat the monsters? Any number you kill will reduce the threat to the people of Carreglyn and hinder the efforts of the Wizard in Barnavon.
'When you have laid the beasts to rest, speak with the duvodiad Amlan at his camp beneath the eaves of the Gravenwood.'
Wargs and Warg-riders may be found at their camp, Naur-maudhûl, to the north of Barnavon.
Gwilum asked you to defeat many Wargs and Warg-riders.