Halls of the Dwarf King

From publisher blurb: Adventure for characters of level 4 through 6 for Swords & Wizardry and Next Dwarven refugees are flooding the trade city of Smith's Head. Lord Mayor Ironbane, worried of sickness and crime, has sent a call out to any adventurer fool enough to hear it. Go to the Dwarven Halls of Stoneholt and discover why the dwarves have abandoned their ancient halls.