Even in the swamp, these dwarves maintain their relationship with the earth. Their homes are shored up burrows similar to the halfling sod homes of Istrouma village. Mud dwarves mine black diamonds for a living — albeit a venture of dubious success, having producing only a handful of diamonds each decade. Their most interesting environmental adaptation is a smithing mill, a water-powered reciprocator for the casting of iron agricultural implements and weapons. Smelters and casters use the rushing of water under a waterwheel to operate their metallurgical bellows.