The standing stones of Tyrn Gorthad are covered with a slow-spreading lichen.
'One of our scouts came back with reports of great circles of standing stones on the other side of the hill across the road.
'If you happen to find yourself among them, would you look out for a green-grey lichen that may be growing on their surfaces? It has healing powers, and it also slowly destroys the stones. Gently scrape it away and bring it back here for a reward!'
Hafren has asked you to collect lichen from standing stones.
Standing stones can be found in Tyrn Gorthad.
You should bring the lichen you collected to Hafren.
Hafren is at Gerwyn's convoy, in northern Cardolan.