Columns of solid light have crystallized into a cage of bars across this chamber. The superheated metaline from 3.10 and 3.11 flows through them every time combustion occurs. See 3.10 for combustion effects and 3.4 for metaline radiation exposure. If the machinery in 3.9 is disabled, this room is safe. The hardlight can be cut using any reflective surface and sells for 200gp / bar. There are 24 bars worth of hardlight in this room. A thin corridor stretches to the north and the south of this bell-shaped room, terminating in an aperture. It must be forced open with a DC 18 STR check. A deep thumping noise can be heard beyond the door.