Cabed has asked you to find something very important to him that he hid near Ost Celebrant during the Battle of the Field of Celebrant.
'To understand the doom falling upon the Field of Celebrant, you must first understand our past.
'Long ago, the kingdom of Gondor was besieged by a Horde of terrible Easterlings. They had forded the Great River at the Undeeps and sought to crush our forces here before sweeping into Gondor proper. While we fought valiantly, there was nothing we could do to stop the onslaught of Easterlings. My fellows and I were sent north to seek the aid of the North-men in desperation.
'With us, we each carried a trinket. Before I fell, I buried the trinket in hopes that my failure would be forgotten. However, having returned, I know that can never be the case. I would ask that you seek it out. I buried it just outside the walls of Ost Celebrant. Perhaps it still remains there.'
Cabed has sent you in search of a trinket he once carried. The trinket is located somewhere outside Ost Celebrant.
Cabed is atop a small hill along the southern road of Parth Celebrant.
You should bring the red-tipped arrowhead to Cabed.