From the introduction:
Several dwarven generations ago, the dwarven city of Klängdenstürm, located deep in the Underdark, operated a mithril mine several miles away from the main city. Not only was it a particularly abundant source of the rare metal, but it was also the only such mine to be found for hundreds of miles. The dwarves of Klängdenstürm were therefore very protective of their mithril and guarded the mine with a battalion of dwarven soldiers and a cunning maze full of deadly traps. Other denizens of the underdark made many attempts to wrest control of the mine away from the dwarves of Klängdenstürm, but all were thwarted. The dwarves thought their defenses were unbreachable, at least until the cunning Bitzune Ca’Theran learned of the mine.
A dungeon crawl for mid-level characters. Distributed as an RTF adventure file and three GIF image files (maps).