Is the national park where they would hide it
Following on from the mystery thread. If you were designing this map, where would you put the thing nobody solves for six years?
My instinct says the park, because wilderness gives you distance and distance is what makes something feel hidden. The swamp is atmospheric but it is also busy with airboats and missions. Kalaga is described as being on the state border, which is as far from everything as this map gets.