Wilferth heard tell of a mighty hero that cut down dozens of Uruks and wants you to investigate.
'You do not think that I remained here in idleness, do you? Because I did not! I went hunting as well, but I did not hunt stag or elk or fowl. Nay, my hunt was for the foes of my people: the Orc and the Uruk!
'In the woods I found two such creatures discussing a recent battle. I thought they spoke of the Orc-ambush that troubled this very camp, but then they spoke of a mighty hero that cut down dozens of their number. At that moment, I leaped from the concealing bushes and slew them, shouting \qTo your sorrow he returns!\q
'Afterwards, I decided they probably spoke not of me, but of another. There is another glade to the far south-east of here, at a narrow place between the cliffs and the great lake. That might be the one of which they spoke. Go there and see what there is to see! I want to know what happened to this hero mightier even than Wilferth!'
There is a glade far to the south-east of the Rohirrim camp, in a narrow place between the cliffs and the great lake in East Wall. A great battle between the Uruks and an unknown hero took place there.
Wilferth wants you to investigate Dead Orc Glade to learn what happened there.
Wilferth is at the Rohirrim-camp in the East Wall.
You found a glade full of the bodies of dead Uruks and should report what you saw to Wilferth.