The iceways was a series of underground travel routes excavated on the Chiss homeworld of Csilla. Boring through the bedrock of the planet, the iceway was unaffected by the shifting ice on the surface. Specialized carriages moved passengers and cargo through the tunnels.
The iceways of Csilla were to be mentioned in the 2011 video game Star Wars: The Old Republic, but the dialogue was cut before release.
- The Complete Star Wars Encyclopedia