The Iron Tower was a completely automated tower on Aridus that acted both as a signal amplifier and power transformer, allowing unrestricted communications and supplying the energy needed to run Imperial hover-trains.
Hazardous lava pits were located in the mining region immediately surrounding the Iron Tower. Unfortunately, the powerful signals emanating from the tower had a harmful effect on the local Chubbits, crippling their nervous systems and eventually killing many. These effects prompted the Chubbits to lead a resistance against the Empire on Aridus.
- The Return of Ben Kenobi (First appearance)
- Shadow Stalker (Indirect mention only)
- Luke Skywalker, Last Hope for the Galaxy (reformatted reprint of The Return of Ben Kenobi)