The planet of Nam Chorios was home to the town of Crystal Valley, where the Crystal Valley pumping station, a water pumping station, was located. In the year 44 ABY, Abeloth—the dark side being—took control of the native Theran Listeners Force organization and brought them to the station, where she began to feed upon them. However, Jedi Grand Master Luke Skywalker, his son, Jedi Knight Ben Skywalker, and their companion, Sith apprentice Vestara Khai, pursued Abeloth to this location and confronted her there. Luke was able to defeat Abeloth, tearing Callista Ming's spirit—a Jedi Knight who had been consumed and killed years prior—from Abeloth. Nenn, the Master of the Theran Listeners, who had also succumbed to Abeloth's influence, then took his own life, which further weakened Abeloth. As Abeloth escaped, a group of Sith led by Sith Saber Tola Annax launched an attack on the Jedi within the pumping station. However, Khai eliminated a tsil—a sentient crystal native to the planet—which resulted in a powerful death convulsion that enabled the Jedi and Khai to escape from the Sith.