- last post: 01.01.0001 12:00 AM PDT
Well I think at least some of the gas goes towards the grunts, since the bright blue stuff is seen in both the grunts gas pack as well as the apparently forunner made structures. It might be a foreunner structure intended for different uses but the covenant have adapted it to make methane so the grunts can breathe.
One level in which you play as the arbiter, you go down a long shaft via an elevator that is constantly moving around containers that hold flood infection forms in them. Maybe that is the conveyor belt's original purpose?