The Undercroft

The space below

Deep cavern underground, only accessible through the path made by Badger Scumbleduck in the Military Base. A massive staircase leads down and down for what seems like a mile into a dome scored out of the earth. Thick, wretched fog fills the room, making seeing more than ten feet ahead of you difficult.
Red rock spikes reveal themselves high in the ceiling when the fog is cleared. The rock dome is home to the mechanical portion of the @Firewall.