There's supposed to be an easteregg when you're standing in the room looking down on the room where you found the last machinepart. Anybody knows how to trigger this egg??
Jump down and well, simply go to the different portals were. The orange one (which leads to Palawan) will have something in front....now if that isn't one of the coolest Egg, I wonder what is. (Even beats the Close Encounter in my opinion)