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 four major Cauldron activities, plus a fifth in Horizon Zero Dawn: The Frozen Wilds.
Background
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.
Cauldrons
There are five cauldrons in the world of Horizon Zero Dawn.
- 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 EPSILON FW Moderate puzzles and Fireclaw boss fight.
Gallery
Concept art by Erik van Helvoirt
Cauldron tunnels and Blaze room
Magnetic rails and 3D printer
Rock formations
Overgrowth
Core room
Storage room
Recycling room
Concept art by Lloyd Allan
Cauldron signal
Animated material artwork by Erik van Helvoirt
Cauldron entrance concept
Entrance animation concept
Cauldron core sculpts by Erik van Helvoirt
3D printer and Core sculpt
Magnetic rail sculpt
Door sculpt
Vent sculpt