Way to unlock: Find and take the parchment with a sketch. It can be found in the East, next to the corpse between the stones.
Quest giver: - (M18,27)
Look around one of the Rifts in the eastern part of the map. It's not far away from the fort which is North from it. You will find a corpse between the stones and next to the body - a sketch (M18,27) which shows a way to the treasure hidden close to the river.
You will find the treasure in the middle of the coast, next to the river on the very south of the map (M18,27a). This treasure is surely worth looking for, since it contains both gold and a legendary armor.
Rewards for completing this quest:
- Experience (little)
- 80 Influence Points