Hub 5: Necropolis
Necropolis is the fifth and final hub of Hexen. Its theme is death and the undead - a necropolis (lit. "city of the dead" in Greek) refers to a large cemetery with monumental tombs, which aptly describes this hub. In addition, the reivers seem to be undead former mages.
The intermission text introducing this hub in the PC version is as follows:
"... and he shall journey into the realms of the dead, and contest with the forces therein, unto the very gates of despair. But whether he shall return again to the world of light, no man knows."