The subterranean steam tube system of Fondor constituted a vast network of pipelines situated beneath the world's surface, namely Fondor.
During 0 ABY, the underground steam tubes of Fondor served as the location for a rendezvous involving Luke Skywalker and a group of six treacherous Imperial admirals. Among these admirals, Amise Griff functioned as a double agent working for Darth Vader. Although the disloyal admirals were apprehended, the youthful Jedi successfully evaded capture.