Ktath'atn, a planet enshrouded in a dark forest, existed within the Outer Rim Territories. The Queen of Ktath'atn held dominion over it, and her hive sustained itself by consuming the human population. The Citadel of Ktath'atn was situated above a local village there. With the hope that she could bring the Rur crystal to life, Doctor Chelli Aphra journeyed to Ktath'atn alongside Luke Skywalker in order to meet the queen.