South Island: Gaztown
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14 - Letter # 19: Hurk’s Third Letter
Map Coordinates: X: 237.4 Y: 425.5
When you reach the map marker, there will be a set of buildings there. Look for the outhouse to the northeast and you will then need to slide down the ladder inside it. When you do, you will enter a small tunnel that has the body within.
15 - Letter #17: Hurk’s First Letter
Map Coordinates: X: 407.7 Y: 499.0
When you reach the map marker at the north shore, simply look for the destroyed bunker and you will find the body inside it against the far wall.