A stronghold existed upon the lunar body Kalakar Six, as referenced in the moon chronicles. During the year 0 BBY, Darth Vader, the Dark Lord of the Sith, accompanied by a pair of stormtroopers, journeyed to this fortress. There, they encountered the one-time Sith Lord known as Darth Maul along with the Prophets of the Dark Side, who were numerous adherents of a dark side religious order. Ultimately, Darth Maul and the Prophets met their death at the hands of Darth Vader and his Master, Darth Sidious.