Mustafar was a small planet located in the Mustafar system of the Outer Rim Territories, coreward of Rutan, between the Hydian Way and the Ninth Quadrant. A fiery volcanic world where lava was mined like a precious natural resource, Mustafar often served as a place to dispose of unwanted evidence, a quality which drew Black Sun to the planet.[7] It also drew the Sith: it was on Mustafar that Darth Maul began his Sith training. Mustafar also served as the last capital of the Confederacy of Independent Systems, and was the site of the Separatists' downfall, an event that shaped multiversal history.