Halo 4: The Essential Visual Guide, coupled with Spartan Ops and the campaign, have collectively given us enough information to put together a semi-accurate map of Requiem, or at least the part of Requiem that Halo 4 takes place in.
The guide informs us of two continents, on which the events of Halo 4 and Spartan Ops take place, the largest continent in the primary shell and the smallest. Using Halo 4 and Spartan Ops dialogue, as well as the guide, I was able to gather information on where each location is located.
Locations:
1.The Cauldron - equator, near The Refuge (mountains)
2.The Refuge - northern jungle regions, near The Cauldron (jungle)
3.Lockup - location unknown, likely near Mantle’s Approach (mountains)
4.Apex - islands just off the southwestern coast of smallest continent, near the Great Anvils, next to Warrens (islands)
5.Galileo Base - northeastern littoral coastline of largest continent, near Quarry/Sniper Alley (mountain/coast)
6.Haven - location unknown
7.Cyclone - equator, near Harvester (mountains)
8.Two Giants - unknown location, near Quarry/Sniper Alley(mountains)
9.Ravine - location unknown (islands)
10.Control - location unknown, next to The Gate (mountains/coast)
11.Fortress - location unknown (mountains)
12.Harvester - location unknown, near Cyclone, likely near Quarry/Sniper Alley (mountains)
13.Quarry/Sniper Alley - location unknown, near Galileo base, possibly near Harvester (desert)
14.The Gate - location unknown, near main entrance, next to Control (mountains)
15.Warrens - southwestern coast of smallest continent, next to Apex (coast)
16.Great Anvils - location unknown, near Apex
17.Infinity crash site
18.Entrance portal
19.The Last City - location unknown
Using this I was able to make a map that isn’t all that accurate as far as terrain goes, but gives us a good idea of where everything is in relation to the each other.
Exact locations are definitely off, but that’s where everything’s generally located in relation to each other as far as I can tell.