This is a sub-page of The Legend of Zelda: Majora's Mask.
Majora's Mask features several dungeon rooms that are defined in the room list, but inaccessible during gameplay.
Great Bay Temple#
Room 0F#
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Stone Tower Temple#
Stone Tower Temple is made up of two separate scenes: one for its normal layout, and one for its inverted layout. The map for the normal layout contains three inaccessible rooms that serve as counterparts to rooms that are only accessible in the inverted map.
Room 05#
Room 05 corresponds to room 05 of the inverted Stone Tower Temple, which contains a block puzzle. Setting Link's xyz coordinates to (-870, -1230, -1,500) will place you on top of a small black triangle floor.
Room 06#
Room 06 corresponds to room 06 of the inverted Stone Tower Temple, which contains the flippable room with the lava pool. Setting Link's xyz coordinates to (600, -780, -1350) will place you above a lone triangle wall. Unlike above, there is no solid floor within the "room" itself (though the wall itself is solid).
Room 0B#
Room 0B corresponds to room 0B of the inverted Stone Tower Temple, which contains the Gomess miniboss and the dungeon boss key. Setting Link's xyz coordinates to (2880, 60, -1710) will place you on top of a medium sized black triangle floor, much like room 05. Notably, this room contains a boss key chest "on the ceiling" of the room.
Stone Tower Temple (Inverted)#
Room 07#
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Room 09#
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