Mazariyan Citadel
this immense fortress, located in the jungles of the planet Xagobah, was actually a living edifice created from a huge fungus. Distinguished by its black color and organic architecture, the Mazariyan fortress resembled the ancient, stepped temples found on Yavin 4. It was unique from these structures, however, in that it was actually alive. Energy arced from the fortress' exterior, appearing as if lightning was running around it. Thick, retractable spines grew along its lower levels, making it nearly impossible to scale, as these spines could shoot outward to impale intruders. Mazariyan survived by feeding on anything it could draw into its walls, including raw energy whenever necessary. The citadel was usurped by Wat Tambor during the height of the Clone Wars. Tambor had been searching for a place where he could hide from the fighting, and believed that the Mazariyan was remote enough to protect him. To ensure his survival, Tambor altered the genetics of many of Xagobah's plants and fungus, turning them into vicious killers. Unfortunately, nearly three years into the fighting, the Army of the Republic laid siege to the fortress, in an effort to capture Tambor as a war criminal. Tambor managed to escape, however, because his own Techno Union forces had been augmented by General Grievous. The Republic bombarded the citadel, tearing huge chunks of living material from its walls until it was abandoned by the Separatists.