Uuserk Marshes
The Uuserk Marshes where an inhospitable region of swamps and quagmires in Zhalfir. It was here that the tomb-city of Aku was build, far away from civilisation to discourage grave-robbers.
The trails leading to the marshes were closed shortly after the Mirage Wars broke out, when the Femeref scout Ekemet and her troupe mysteriously died in the swamp. Soon afterwards, the city of Aku closed its gates, until the final magical duel in the swamp where Kaervek was defeated.