every rockstar map needs one unsolvable mystery and we do not know where this one is yet
mount chiliad had a mural and a decade of people flying jets into it at 3am. red dead had its own set of things people are still arguing about.
the point of these is not that they have answers. the point is that a map needs somewhere that feels like it is keeping something from you. a map you can fully account for is just a level.
so where is it going to be here. my money is on the swamp because water hides things and because i want it to be the swamp