- "I have been in contact with the other clanholds. We are not the only ones affected--the entire planet screams at what the dark one is building on the Gahenn Plains."
The Gahenn Plains, also known as the plains of Gahenn, were a location on the planet Mustafar. At some point during the reign of the Galactic Empire, the Sith Lord Darth Vader had his castle built over the ancient Sith cave located in the Gahenn Plains.
- Ultimate Star Wars, New Edition
- Star Wars: The Galactic Explorer's Guide
- Star Wars: The Secrets of the Sith
- (First identified as plains of Gahenn)