These treasure maps are some of the hardest I've seen in ... To open it, you'll need the Key from below Trosky, which is inside a cracked skull resting on a sack on a ledge at the far end of ...

Here, find and climb onto a skull-shaped rock through one of the eyes. In one corner of the cave, you will find an NPC. If the Treasure Map is in your inventory, and you have enough currency ...