Vortex

Vortex is a Halo 4 multiplayer map. The map is also featured on three missions of Spartan Ops, in which it is known as Cyclone.

Description
The Forerunner structures which occupy Requiem's equatorial caverns appear to generate power by harnessing its violent squalls. Onsite personnel believe that a full understanding of such a technology would offer the UEG substantial amounts of affordable, clean energy. Nevertheless, its internal mechanisms remain enigmatic.