Nekravol

Nekravol is the tenth level of Doom Eternal. This level is the point of no return, upon entering the level, the Fortress of Doom cannot be accessed until post-game.

Lore
Nekravol is a titanic Hell city, referred to both as a factory and a fortress. It serves a very important role: processing the souls of Hell's victims into Hell energy and mixing it with Wraith power into Argent energy. The factory uses Sentinel and Maykr technology, because it was built by Argenta slaves under the guidance of the Khan Maykr.