- C-3PO: "These steam tubes seem endless, Master Luke."
- Luke Skywalker: "On a big industrial planet like Fondor, they probably are Threepio."
- ―C-3PO and Luke Skywalker
Fondor's underground steam tubes were a huge pipeline network under the surface of the planet Fondor. They supplied the entire planet with gas.
In 0 ABY, Fondor's underground steam tubes were the site of a meeting between Luke Skywalker and six traitorous Imperial admirals. One of them, Admiral Amise Griff, was a spy for Darth Vader. The traitorous admirals were arrested, but the young Jedi managed to escape.