Turok 3: Shadow of Oblivion/Level 5: Oblivion

This is a mechanical based level similar to the Primagen's Lightship. You fight against the same creatures you fought in the Oblivion Portals in Turok 2. The whole level is a large mining operation, which finds you disrupting said operation. After traversing through each area more than once, you come to a large arena. After a cutscene involving a child transforming into Oblivion, you fight it. After several rounds, Oblivion blows up and you must chase it, fighting Oblivion High Priests along the way. The final boss is Joshua Fireseed who has been possessed by Oblivion.