The super mutant bunker is a base of operations for the super mutants located in the middle of their two trenches under The Mall. The super mutants occupy all the territory east of the Washington Monument. It appears as if the Brotherhood of Steel once occupied the bunker, be it for a brief period, before it was retaken, as evidenced by several Brotherhood of Steel corpses as well as radio equipment.
There are two entrances to the super mutant bunker. The eastern entrance is at the bottom of a pit protected by a trap. The western entrance is in the western trench behind a sandbag wall. Both entrances are booby trapped.
If the super mutants outside are sufficiently damaged they may retreat, occasionally heading into the bunker.
The super mutant bunker appears only in Fallout 3.