The workings of this Cabador complex would have been unknown to most even when it was in operation, a PC with the relevant background or experience can make a Finesse or Knowledge check to change an aspect of the environment.
- Critical Success: The environment changes to suit their need and they glimpse a piece of the greater purpose of this complex
- Success with Hope: The environment changes to suit their need
- Success with Fear: The environment changes to allow advancement, but this interface breaks with the hiss of ancient air
- Any failure: two PCs within close range of the interface (including the one making the check) is moved through a secret hatch as the space reorients itself. They are now trapped in a vent leading elsewhere in the complex.

The spirits trapped here have been looking for a way out of this labyrinth for centuries. Whenever a player marks a stress their hope die is diminished to a d10 until they spend a hope on a feature or action, or an ally spends a hope to aid them

Spirits of Ruhr circle the pipes here, trapped in the labyrinth looking for an exit. Sudden movements of the system or part of the facility being broken can release them into the environment. Spend a fear to immediately summon a Mercurial grief, which starts hidden. The party might feel a presence in the room with them.