Located on a rocky island in the western area of Ulster.
Climb onto the large rock and up to a ledge made from the ruins of half a wooden boat.
Stand on the boat and shoot the rocks across the way to destroy the Symbol.
Artifact #2: Cursed Symbol
Located in the northwest area of Ulster as marked on the map.
Enter the trench area and turn right to follow the path around until you can take a left.
Continue walking until you reach a ramp with wooden shields resting against spikes and climb the ramp.
At the top climb the pole and walk through the tight rope to cross it. Take left and climb the pole and run across the tightrope. to reach the pole on the other side.
From the top of the pole, you can scan for the cursed symbol and shoot it.