Trail of Subjugated Saurians

Trail of Subjugated Saurians (unofficial name) is a Hidden Exploration Objective that takes place in Coatepec Mountain, Natlan. Discover the Phlogiston Extraction Research Center and deactivate it by following the trail of Fatui and their Saurian prisoners.
==Steps==
# Enter the Phlogiston Extraction Research Center, located underground, accessed from a crevice guarded by Fatui Skirmishers northeast of Ancestral Temple, Coatepec Mountain.
# Defeat the Fatui at the base, i.e. at the entrance of map level Extraction Research Center: Experimental Site
# Open the Common Chest to obtain 
# Use the key to unlock the nearby Saurian Cart
#* This will create Yumkasaurus Spiritsconces along the path to the locked gate
# Use the Replica "Relay Ball" to unlock the gate
# Proceed into the control room and enter the eastern room
# Catch the burrowing Tepetlisaur Whelp
#* A Removable Grappling Hook and a Tepetlisaurus Spiritsconce will appear
# Remove the grappling hook and attach it to the metal crate
# Grab and pull the metal crate twice to bring it to the room's entrance
# Remove the Replica "Relay Ball" and return to the control room
# Insert the Replica "Relay Ball" into one of the metal platforms
#* The southern room's gate will open and the following enemies will appear:
# Enter the southern room and grab the second Replica "Relay Ball" from inside the hanging cage above, with the help of the Special Coilgrass Sigil
# Return to the control room and place the second Replica "Relay Ball" into the other metal platform
# Disable the machine (requires pressing "Disable" twice)
# Hold out against the Fatui for 60 seconds
#* The first two enemies will appear from the following list, and with each enemy defeated, subsequent enemies will keep replacing them in the given order, cycling until the timer runs out
# Defeat the 
#* An ally and will fight alongside the player until the Veteran Fatui Pyro Agent is defeated
==Gameplay Notes==
* Completing step 15 (holding out against the Fatui for 60 seconds) grants the .
* Completing the quest (defeating the Veteran Fatui Pyro Agent) grants a Luxurious Chest containing and .
* After defeating the Veteran Fatui Pyro Agent, the Saurians will be freed and can no longer be interacted with.
* The following chests are unlocked in the process of this Hidden Exploration Objective, but are not needed to unlock its related Achievement or the final Luxurious Chest:
** Unlocking the second Saurian Cart in the control room using the reveals a Precious Chest.
** Riding the newly unlocked Spiritway in the southern room grants an Exquisite Chest after reaching the end.
==Dialogue==
;(Interact with the Trapped Tepetlisaur outside the research center, optional)
:;(With a playable character)
:::Trapped Tepetlisaur: Wrroh...
:;(While indwelling a Saurian)
:::Trapped Tepetlisaur: H—Help me...
;(Interact with the Unconscious Yumkasaur outside the research center, optional)
:Unconscious Yumkasaur: ...
;(Interact with the Trapped Yumkasaur outside the research center, optional)
:;(With a playable character)
:::Trapped Yumkasaur: Arrooo...
:;(While indwelling a Saurian)
:::Trapped Yumkasaur: Uhh, big rock, furry person, bad!
;(Interact with the Unconscious Koholasaur outside the research center, optional)
:Unconscious Koholasaur: ...
;(Interact with the Sad Tepetlisaur in the map level Extraction Research Center Passage, optional)
:;(With a playable character)
:::Sad Tepetlisaur: Rrroar...
:;(While indwelling a Saurian)
:::Sad Tepetlisaur: Wooden box... Can't open...
----
;(Open the Common Chest at the entrance of map level Extraction Research Center Experimental Site)
:Paimon: Oh! Looks like we've found a key. Hm, but what does it open...
;(Open the Saurian Cart's door next to the Common Chest)
:Rescued Yumkasaur: Arroo! Arroo!
:;(Multiple Yumkasaurus Spiritsconces appear)
;(Approach the broken pipe)
:;(A replica relay ball falls)
:Paimon: Heads up!
----
;(Interact with the Trapped Yumkasaur in the control room, optional)
:;(With a playable character)
:::Trapped Yumkasaur: Arrooo...
:;(While indwelling a Saurian)
:::Trapped Yumkasaur: Person in black... black fur... hot, very hot...
;(Interact with the Trapped Tepetlisaur in the control room, optional)
:;(With a playable character)
:::Trapped Tepetlisaur: Wrroh...
:;(While indwelling a Saurian)
:::Trapped Tepetlisaur: I'm hungry...
;(Interact with the Unconscious Koholasaur in the control room, optional)
:Unconscious Koholasaur: ...
----
;(Interact with the Trapped Tepetlisaur in the eastern room, optional)
:;(With a playable character)
:::Trapped Tepetlisaur: Wrroh...
:;(While indwelling a Saurian)
:::Trapped Tepetlisaur: L—Let me out...
;(Catch the burrowing Tepetlisaur Whelp in the eastern room)
: Caught you!
:;(A removable grappling hook and a Tepetlisaurus Spiritsconce appears)
:Tepetlisaur Whelp: Roo... Rawr...
;(Return to the control room with the first Replica "Relay Ball")
:Paimon: Looks like the base can be activated from here!
----
;(Interact with the Unconscious Koholasaur in the southern room, optional)
:Unconscious Koholasaur: ...
;(Unlock the Saurian Cart's door in the southern room with the , optional)
:::Rescued Koholasaur: Rawoo! Rawoo!
:;(A Koholasaurus Spiritsconce appears)
==Interactables==
The following interactables can be found in the Phlogiston Extraction Research Center. Unlike the Saurians, they will remain after completing the Hidden Exploration Objective.
==Tutorials==
==Trivia==
==Change History==
==Navigation==