The berries growing near the ponds of the Writhendowns show signs of spoilage, a bad sign for the crops that the people of Wildermore rely upon.
'Keep your eyes peeled while you are out, stranger. These are troubling times.
'Many things grow and live in Wildermore besides its people, beneath the notice of Orcs and Men. I do not have time to roam the lands, for my sword is needed more than my eyes.'
Berry bushes grow around the frozen ponds in the north-eastern Writhendowns.
You should collect berries and examine them for signs of spoilage.
Thrymm Red-beard is at his camp in the northern Writhendowns.
You should return to Thrymm and show him the berries.