Cultist Base - Doom Eternal Guide - IGN

Now that you have obtained the Celestial Locator from Exulta, you can now pinpoint the locations of the two remaning Hell Priests. Deag Ranak locked himself in

Doom Eternal secrets: Cultist Base maps and locations guide - Polygon

DOOM Eternal Cultist Key Location Guide

Cultist Base - Doom Eternal Guide - IGN

Cultist Base Secret Encounters - Doom Eternal Guide - IGN

Doom Eternal secrets: Cultist Base maps and locations guide - Polygon

The Slayer destroys EVERY SINGLE MONSTER in his path to Cultist Base - DOOM Eternal (4K ULTRA HD)

Cultist Base - Doom Eternal Guide - IGN

Doom Eternal Cultist Base: Mission 3 Walkthrough And Tips - GameSpot

I've played this so many times and only JUST realized that the cultist base logo (or perhaps the logo for hell altogether) has the Quake logo embedded in it. Sweet easter egg!

Walkthrough - Doom Eternal Guide - IGN

Doom Hunter Base Secrets and Collectibles - Doom Eternal Guide - IGN