Warden tells you, "Jacob Durstan of Arwic buried his axe deep in the skull of a skeleton and couldn't retrieve it."
Warden tells you, "The skeleton in question is in a fort at 32.5N, 661.E outside of Arwic."
Warden tells you, "Retrieve Jacob's axe for him and return it to him in Arwic."
Warden tells you, "Return to me with anything he gives you in exchange for a reward."