Mustafar

Mustafar was a scorching lava world located in the Outer Rim Territories, and had an array of valuable minerals which were mined by the Techno Union, and was the headquarters of the infamous Black Sun during the Clone Wars.[5] The planet's native Mustafarian species lived in underground caves created by lava fleas as they ate through the planet's crust, and made their armor from the heat-resistant shells of the creatures. Only venturing up to the surface in order to collect valuable minerals from the lava flows, the short and strong southern Mustafarian subspecies carried out the heavy labor involved, while the tall and slender northern Mustafarian subspecies acted as guards and expert lava flea riders.[9] Due to the planet-wide lava surface, all buildings were held up by gravity supports.[3] Its capital city was Fralideja.[9]