Cauldron concept art

Concept art.

A Cauldron is an underground facility where machines are built. By overriding these, Aloy unlocks the ability to control new machines. In Horizon Zero Dawn there are five major Cauldron activities.


Project Zero Dawn envisioned a series of underground facilities to rebuild a lifeless Earth. These facilities would be controlled by GAIA while the subfunction HEPHAESTUS would oversee construction of Cauldrons where specialized robots would be designed and constructed for use in terraforming.


There are five cauldrons in the world of Horizon Zero Dawn, four of which are accessible.

  • Cauldron PSI: Corruptor boss fight to unlock PSI overrides
  • Cauldron SIGMA : Basic puzzles and Fire Bellowback boss fight
  • Cauldron RHO : Moderate puzzles and Snapmaw and Ravager boss fight
  • Cauldron XI : Eclipse tribe camp and several robots and cultists as boss fight
  • Cauldron ZETA : No puzzles and Thunderjaw boss fight

Cauldron Overrides

Every cauldron unlocks its own overrides and by completing a cauldron, the player unlocks the ability to override a few new machines.

PSI Overrides

Main Article: The Womb of the Mountain

SIGMA Overrides

RHO Overrides

XI Overrides

ZETA Overrides


Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.