The released water flows through tunnels dug by the Orcs and into the magma chamber of Orodruin. The resulting steam pressure triggers a massive volcanic eruption, transforming the lush Southlands into the blackened wasteland of Mordor and creating Mount Doom . Key Takeaways & Production Notes
The surviving Southlanders retreat to their village to make a final stand. Despite Arondir and Bronwyn’s efforts, they are nearly overwhelmed until the Númenórean cavalry —led by Galadriel, Halbrand, and Queen Regent Míriel—arrives to turn the tide.
This episode confirms the origin of the Uruks and depicts the catastrophic geomorphic event that defines the landscape of the Third Age. The released water flows through tunnels dug by
Galadriel and Halbrand pursue and capture Adar. During his interrogation, Adar reveals he is one of the Moriondor —elves corrupted by Morgoth to become the first Orcs—and claims to have "killed" Sauron. The Climax: The Birth of Mordor
The showrunners consulted with geologists to ensure the mechanics of the volcanic eruption (water meeting magma) were based on real-world physics. Despite Arondir and Bronwyn’s efforts, they are nearly
While the heroes celebrate their victory, the traitorous Waldreg uses the broken sword (the "key") to unlock a dam at Ostirith.
Adar and his Orc army march on the watchtower, only to find it a trap set by Arondir, who collapses the tower onto the invading force. During his interrogation, Adar reveals he is one
The episode focuses entirely on the conflict in the Southlands, merging several major character arcs.