Sullust
this was the third and primary planet in the Sullust system. Sullust was known for its mineral mines and technologies. Although widely known as a volcanically-active world, Sullust only had a few active volcanoes, and these were widely avoided by the native Sullustans. In general, though, Sullust was a superheated world with a hot, noxious atmosphere that was wracked by violent storms. Thus, the native Sullustans were forced to live underground in the cool, humid caves that riddled the planet's mantle. The need to ensure the safety of their underground cities forced the Sullustans to understand the seismic and volcanic nature of Sullust, and to engineer their structures accordingly. There were also a number of underground lakes and caverns that supported a surprising number of life forms. The huge, diversified SoroSuub Corporation grew out of the caves, and when the Sullustan Council faltered, SoroSuub announced that it was allying the planet with the Empire. Many of the working class Sullustans could not believe this, and a wave of rebellion swept through the planet's inhabitants just before the Battle of Endor. It was then allowed to be the stop-over site for the massing Rebel fleet prior to the destruction of the second Death Star.