121 FROZEN LABORATORY ANNEX. The ceiling tiles in this room glow with blue light and the room is fiercely cold. Unless the adventurers are wearing protective clothing they will lose hit points at the rate of 1 per turn.
The walls are lined with glass cabinets. Inside the cabinets are pots of a clear liquid that is well below the freezing point of water. Immersion of an extremity in the liquid causes 1d6 damage and if not withdrawn immediately it will freeze the member solid and it will break off. Throwing the liquid on a person or monster does 2d4 cold damage. There are six cabinets and each contains one metal pot holding about four gallons of the stuff.