This huge area takes up most of the island, with the only real "settled" places on it being the odd array of buildings. There are paths through the jungle, but there's also an extremely thick underbrush and abundance of plant life that would impede and agitate the contestants; not to mention the animal life dwelling within that would find the contestants to be a nice treat. The terrain itself is treacherous with several random drops, cliffs, and the occasional booby trap that the soldiers manning the base "forgot" to disarm; one could be easily lost for days in the vast confines of the jungle if the heat and other conditions didn't drive them insane.