To easily get the “Excavator” achievement go to Mariguana Island and find a treasure map at the coordinates 878, 539.The map will show you the coordinates of a buried treasure, accompanied by a picture. In this case, it is a treasure on Andreas Island. Go there and head to the coordinates 575, 717 to find it. Talk to barkeepers to find other treasure maps, or synchronize viewpoints across the world.
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