Silo 16

Silo 16 was the area on Malcassairo from where the last of the humans took a rocket from on their travels to Utopia. The name suggests that there may have been or are more silos across the planet. (DW: Utopia)

However when Malcassairo had nova-ed Silo 16, along with the rest where presumably swallowed by in the planetary explosion that followed the Utopia Project Rocket's departure. (DW: Last of the Time Lords)