After a brief rest, the thirty-odd Dwarves stayed behind in the assembly hall while Colin, Donkexes, and the others were led by Dorn to a different room.
In the middle of this room was a large, square pit, with a block of iron suspended above, perfectly sized to cover the entire opening.
Each of the room's four walls connected to a corridor just wide enough for four people to pass through, perfectly suiting the requirements of their plan.
"What's this thing for?" Colin asked, pointing to the iron block above.
"It's for compacting trash. This place is basically a garbage disposal facility," Dorn said.
"By the way, how did you guys figure out the location of this room?" Colin asked. "Even if you say this place is your home, you've never actually been to this specific area, have you?"
