Source of Evil is the eighth and final level of The Corridors of Time, the final level of the game and the final level of Quake and its official expansion packs. This is where the final battle with the Dragon takes place - within a large cavern filled with various types of ammunition, as well as a lake of lava. Once the final boss has been defeated, the way into the inner sanctum will be opened. There, players will have to destroy the Temporal Energy Converter in order to finish the game.
Finally, Quake's Temporal Teleporter yields to your assault. A high pitched scream emits from the devastated device as stressed steel blasts outward to rock the cavern. The machine is devoured by molten lava. The ground shudders as reality shifts back to its predestined path. You run to enter the charged time pod, scrambling in as the chamber closes. Your consciousness fades as you realize you have halted Quake's plans for... The Dissolution of Eternity.
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—The Corridors of Time Completed
Multiplayer Episode Completion
“
You have destroyed Quake's Temporal Teleporter. His Assault on Time has been defeated.
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—The Corridors of Time Completed
Video
Quake 1 Dissolution Of Eternity - Episode 2 (The Corridors Of Time) - Map 8 (Source Of Evil)