The Undertown Foundries were an industrial center in Undertown.
They created alot of factory smoke and pollution, which damaged the edgewater river. In Stormchaser, Vilnix Pompolnius used the foundries to make chains to stabilize the floating city of Sanctaphrax, thus polluting the river even more. In exchange, he provided the leagesmen with phraxdust, to purify their water. Polluting, cleaning, polluting, cleaning, a vicious circle.