Tunnel-making, boring war machine |Physical and technical
specifications| |Usage and history| Groundborers were large
machines used for creating tunnels manufactured by Akin-Dower.
They were used to provide a quick shelter on dangerous worlds. A
group of wealthy Naddists purchased several for use in the
Freedon Nadd Uprising, where Warb Null attacked the city of Iziz
on Onderon using modified versions of the Akin-Dower
groundborers. After this attack, they were known as Onderonian
War Machines. - Tales of the Jedi Companion - The Official Star
Wars Fact File 113 (REV1, Naddist Revolt) - The Complete Star
Wars Encyclopedia