Jzadirune; commonly known as "the Malachite Fortress," is a long abandoned set of underground passages deep below the city of Caldera.

Jzadirune was built long ago by Dwarves, who later abandoned their lair because they believed the underground labyrinth to be cursed.

Legend has it that although the dwarves sealed off the main entrances, a few secret entrances still exist, connecting the city to the dungeons below.