Exclusion zone
Modern Warfare 4 Hajin
Hajin is a fictional exclusion zone on a tri-border of South Korea, North Korea, and Russia, created by the campaign’s reactor disaster. Infinity Ward built it with the campaign team rather than reskinning Al Mazrah. Several POIs will look familiar if you finished the story; they are frozen in a post-battle state and often more explorable than the mission allowed.
This is a map page. Extraction rules sit on extract. The parent loop sits on DMZ. Season 01 also drops Hajin into Warzone as a battle royale map — same geography, different rules.
Confirmed regions
Named POIs from official and press briefings: Hajin City ruins, casino, Fallout (irradiated reactor), hospital, military base, farmlands, prison, broadcast, town. The eastern Fallout pocket is a gas-mask check. Loot in there is exclusive because the radiation is not flavor. Water-only entries exist for sealed buildings — if a door is dead, look for a culvert.
The Russian third of the map is not playable at launch and is scheduled as seasonal expansion. Do not plan a loot route through a locked border. Combat Outpost maps Imjin Farmland and Wolves Stadium are Hajin slices used in large-scale multiplayer; they are not the full DMZ raid space. See maps for those modes.
Pack for the POI, not for the fantasy
- Fallout: gas mask, extra filters, close gun
- Prison: plates, trophy, a plan for layered interiors
- Casino vault: quiet infil, not a 6v6 push
- Military base: expect vehicles and air
- City ruins: vertical, good for hang/shimmy from the movement kit
Weather is a mechanic
Rain cuts visibility and silences footsteps you were relying on. Fog turns a learned route into a guess. Overcast changes how scopes bloom against the sky. Weather intensifies as the raid goes on, which is a polite way of saying your extract in minute 35 is not the extract you scouted in minute 5.
Dynamic Operations will send you across weather bands on purpose. If a Story Mission pin sits in Fallout during a storm, that is the mission. Bring the mask. Bring a mid gun even if you are an SMG player — Hajin is larger than Al Mazrah by Infinity Ward’s own description.
How to read Hajin like a campaign player
If you have finished Entrenched and the rest of the story, the reactor is not a loot icon, it is a place you already bled in. That is the point of building DMZ with the campaign team. If you have not, stay out of story-adjacent buildings until you clear campaign — or accept spoilers as part of the extract.
When you know the geography, go to extract and how to extract. The map does not matter if you die on the helicopter tail.
Related intel
Section hub
Field questions
Frequently asked questions
Is Hajin bigger than Al Mazrah?+
Infinity Ward has described it as one of the largest maps they have built for Call of Duty, designed for exploration rather than a fast BR rotate.
Do I need a gas mask?+
Yes, for the Fallout / reactor radiation pocket. Other regions play without it.
Is the whole tri-border playable at launch?+
No. The Russian third is planned as post-launch expansion.