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"The lesson will be taught in due time, Aloy. Until then, we wait."
This article contains heavy spoilers, and may reveal plot or quest information.

"New metal. Fire and lightning. This is a place for machines, not people."

The Forge of Winter is a side quest in Horizon Zero Dawn: The Frozen Wilds.


After overriding the cauldron door, Aloy, Aratak, and Ourea enter Cauldron EPSILON to find it overtaken by The Daemon. Journeying through the Cauldron, they come to the Antechamber where Aloy navigates a number of obstacles to make the route easier for Ourea and Aratak. Continuing into the room beyond, Aloy activates the console triggering a hologram of CYAN. Having momentarily broken free of The Daemon's restraints, CYAN reveals the identity of The Daemon to be HEPHAESTUS who seeks to overtake her in order to manufacture hostile machines.

Opening the door they continue into the Production Area. After dispatching the Daemonic Machines and extending the bridges for Aratak and Ourea to cross, they discover another console. Through this, CYAN reports to have found a potential method to defeat HEPHAESTUS through exploiting the unstable regions of the facility's geothermal system.

Through further exploration, they reach the Recycling Area. After Aloy opens up a direct route across the area, they enter a room dominated by a source node and an unresponsive CYAN. Upon redirecting the light source to partially restore CYAN, the AI informs them that HEPHAESTUS is readying thousands of hostile machines. In order to counteract them, she proposes that they destroy regions of the facility; however, this is interrupted by HEPHAESTUS who initiates further defensive measures.

Aloy, Aratak, and Ourea then make their way to the Cauldron Core, but before Aloy can override it they are met by a Daemonic Fireclaw. After dispatching the Fireclaw and Control Towers, Aloy attempts to override the Core but is pushed back by a power surge triggered by HEPHAESTUS. Taking up Aloy's spear, Ourea completes the override, expelling HEPHAESTUS and freeing CYAN at the cost of her life. With CYAN in control, she begins the destruction of the facility to stop the hordes of machines created by HEPHAESTUS. Leaving Ourea's body behind, Aloy and Aratak flee the facility.

Recovering from their tumble down the mountain's slope, Aloy and Aratak agree to return to Ourea's Retreat to meet with CYAN.

Aloy arrives at the retreat to catch the last of Aratak's discussion with CYAN who replays a recording of an exchange between the AI and Ourea. After Aratak leaves, Aloy converses with CYAN to learn more about HEPHAESTUS, The Old Ones, the Firebreak Project, and her interactions with Ourea. After their exchange, Aloy meets Aratak outside. The two take a moment to honor Ourea, and Aloy returns Aratak's Chieftain title to him. Aratak informs Aloy that Naltuk has tracked down five Fireclaws that were released from the Cauldron prior to its destruction. Knowing that The Cut will not be safe until they are defeated, Aloy sets off to begin the hunt. 


  1. Explore the Cauldron
  2. Help Aratak and Ourea cross the Antechamber
  3. Activate the Console
  4. Explore the Cauldron
  5. Help yout Allies cross the Production Area
  6. Explore the Cauldron
  7. Activate the Console
  8. Explore the Cauldron
  9. Help your Allies cross the Recycling Area
  10. Activate the Source Node
  11. Restore CYAN
  12. Go to the Cauldron Core
  13. Destroy or Override the Control Tower
  14. Kill the Fireclaw
  15. Override the Cauldron Core
  16. Escape the Cauldron
  17. Return to Ourea's Retreat to speak to Aratak and CYAN.
  18. Talk to CYAN
  19. Talk to Aratak



The Forge of Winter - Ultra Hard - No Damage - Video Guide


The following datapoints are obtained automatically during this quest and cannot be missed.

Frozen Wilds Hologram Datapoints


  • There is a glitch that can occur while fighting the Fireclaw. After a Control Tower is destroyed, the Fireclaw may freeze in place; the player is still able to damage it, however.
Horizon Zero Dawn Quests
Main Quest A Gift from the Past - Lessons of the Wild - The Point of the Spear - Mother's Heart - The Proving - The Womb of the Mountain - A Seeker at the Gates - The War-Chief's Trail - Revenge of the Nora - The City of the Sun - The Field of the Fallen - Into the Borderlands - The Sun Shall Fall - Maker's End - The Grave-Hoard - To Curse the Darkness - Deep Secrets of the Earth - The Terror of the Sun - The Heart of the Nora - The Mountain That Fell - The Looming Shadow - The Face of Extinction
Side Quests A Daughter's Vengeance - A Moment's Peace - Acquired Taste - Ancient Armory - Blood on Stone - Cause for Concern - Farewell - Death from the Skies - Fatal Inheritance - Heap of Trouble - Honor The Fallen - Hunters' Blind - In Her Mother's Footsteps - Insult to Injury - Queen's Gambit - Redmaw - Robbing the Rich - Sun and Shadow - Sunstone Rock - The Forgotten - Traitor's Bounty - Underequipped - Weapons of the Lodge
Errands A Curious Proposal - Collateral - Deadliest Game - Demand and Supply - Hammer and Steel - Healer's Oath - Hunting for the Lodge - In Foreign Lands - Luck of the Hunt - Odd Grata - Sanctuary - Shortage of Supplies - Sun's Judgment - To Old Acquaintance
Activities Bandit Camps Blackwing Snag - Devil's Thirst - Gatelands - Hollow Fort - Shattered Kiln - Stone YieldFW - Two-Teeth
Cauldrons Cauldron RHO - Cauldron SIGMA - Cauldron XI - Cauldron ZETA
Corrupted Zones Corrupted Zones
Hunting Grounds Greatrun - Nora - SnowchantsFW - Spurflints - Sun Furrows - Valleymeet
Tallnecks Devil's Thirst - Copper Deeps - FrostfiguresFW - Rustwash - Spearshafts - Sun-Steps
Horizon Zero Dawn: The Frozen Wilds Quests
Side Quests Firebreak - For the Werak - Frontier Justice - Into the Frozen Wilds - The Forge of Winter - The Hunters Three - The Shaman's Path - The Survivor - Waterlogged
Errands A Secret Shared - Ikrie's Challenge - Geared Up: Forgefire - Geared Up: Icerail - Geared Up: Stormslinger - Out of the Forge - The Claws Beneath