Gazula

Gazula (IPA ['gαz.u.lə], pronounced GAH-zoo,lah) was a major city in the North throughout history, most notably as one of the imperial cities of the Pantheon, and one of the subterranean Dwarfgates, before both were abandoned sometime during the early 6th Era. The circumstances surrounding its collapse are still unclear.

Origins
History section: Origins

Imperial City
History section: Imperial Age

Dwarfgate
History section: Dwarfgate