human
Make a concise location description of a spooky hallway with frost patterns and bolts.
assistant
Built into what looks like a former sewer, the narrow hallway has curved metal walls and is dimly lit by torches mounted in makeshift stands on either side. Dry wooden planks cover the floor and provide a sturdy footing, secured firmly in place by large metal bolts. Strange patterns of delicate frost have formed on the walls, tracing out circles and spirals that hint at complex magical devices behind the rusty metal.