The Mud Fields were a region on a planet in the Vagadarr system. It was the area of the planet that was not close in proximity to the Blue mountains and was thus dead and lifeless. The Mud dwellers were headquartered in Mucktown there during the Vagadarr system war.
- Star Wars 26: Yoda's Secret War, Part I (First appearance)
- Star Wars 27: Yoda's Secret War, Part II (First identified as Mud Fields)
- Star Wars 29: Yoda's Secret War, Part IV
- Star Wars 30: Yoda's Secret War, Part V