Factory of the Sludge Dwarves [Mini-Map Monday]

Far into the Deep Down Below, the foul Sludge Dwarves operate their refinery. In the poisonous depths they harvest noxious alchemical materials from the river of slime that bubbles up from a pustule in the earth. But all is not well, as cast-off mutant casualties of the toxic trade have had enough of their former masters.

Edit: Sludge Dwarves for Dungeon World!