The supposed ghoul-free headquarters trainyard the NPCs speak of — which Carl suspects may not really exist.
Yard A is the Iron Tangle's alleged headquarters trainyard, spoken of by the fleeing staff as the safe, ghoul-free hub they're all relocating to. The gremlin Widget says the yards are moving there; Madison insists the party must "turn themselves in" at Yard A and that her executive apartment lies just outside it. But when Carl presses her, she can't say how to reach it or whether she's ever actually seen it — leading him to suspect Yard A is another thread of the NPCs' thin, invented backstory and may not truly exist.
Described only in NPC hearsay as the ghoul-free headquarters yard with executive quarters nearby; never actually seen.
A rumored safe headquarters yard, possibly a fictitious NPC memory, that anchors the staff's evacuation.