Fondor's underground steam tubes were a huge pipeline network under the surface of the planet Fondor. They supplied the entire planet with gas.
The first meeting between Luke Skywalker and Darth Vader took place in Fondor's underground steam tubes.
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.
- The Essential Guide to Planets and Moons
- Star Wars Encyclopedia
- Star Wars: Edge of the Empire Core Rulebook