Area Zero Underdepths ゼロの大空洞
Great Zero Hollow
"Wild Missingno. appeared!"
Recommended Level: {{{reclvl}}}
Map description: {{{mapdesc}}}
Location: Great Crater of Paldea
Beneath Area Zero
Region: Paldea
Generations: IX

Location of Area Zero Underdepths in Paldea.
Pokémon world locations

The Area Zero Underdepths (Japanese: ゼロの大空洞 Great Zero Hollow) is an area located within the Great Crater of Paldea at the center of the Paldea region, but even deeper than Area Zero. It was formed 2,000,000 years ago by seismic shifts and cave-ins.

In the core series games

History

A sketch of Stellar Form Terapagos

Background

The Area Zero Underdepths was formed 2,000,000 years ago by the same seismic shifts that caused Terapagos to almost go extinct. However, one Terapagos managed to survive by changing the energy in its body into hard crystals and going into hibernation deep underground, protecting itself as a result. At some point, numerous cave-ins also took place in the underdepths, resulting from tectonic activity and erosion caused by rainwater or groundwater.

200 years ago, during the first Area Zero expedition, the historian Heath strayed from his team and somehow ended up in the underdepths, where he encountered the last living Terapagos. He coined Terapagos's name and even theorized that it could be the origin of the crystallization phenomenon. When he returned to the surface, he wrote about their encounter in the Scarlet BookS/Violet BookV.

About 10 years ago, as part of their "Project Tera", Professor SadaS/Professor TuroV reach the Area Zero Underdepths and discover Terapagos in its dormant state. Research on the slumbering Pokémon allowed them to invent an AI replica of themselves, the Tera Orbs, and the time machine.

Pokémon Scarlet and Violet

Stellar Form Terapagos destroying Kieran's Master Ball
The Indigo Disk

After gaining the permission from Paldea's Pokémon League to go into a new expedition to Area Zero, Briar invites the player, Carmine, Kieran, and Drayton to serve as her protectors, but the latter refuses. Using Geeta's Indigo Disk, the four gained access to the elevator of Zero Lab, allowing them to go down into Area Zero Underdepths to find Terapagos.

During their travel though the crystal-filled caverns, they discover the nineteenth Tera type, named Stellar-type, which holds the power of every other known type. They also find Terastal crystal clusters that block their path, so to continue on, the player must defeat wild Pokémon Terastallized into Stellar-type so the path is cleared and they can travel even deeper.

At the deepest cavern of the underdepths, the group discovers a crystal that Briar says is the dormant form of Terapagos. Once Terapagos awakens, it tries to approach the player, but Kieran, refusing to allow another Legendary Pokémon to join the player instead of him, swiftly catches Terapagos with a Master Ball. Eager to see Terapagos in action, Briar urges the player to battle Kieran. The player accepts, but despite Kieran using Terapagos against them, he still loses. Briar realizes that Terapagos is not at its full power and tells Kieran to use his Tera Orb on it. Doing this, Terapagos transforms into its Stellar Form, unintentionally causing its power to overflow and go out of control, even breaking its own Master Ball when Kieran tries to recall it. The player and Carmine are forced to battle Terapagos, though Carmine quickly loses, but thanks to the player's encouragement, Kieran finally joins them, allowing both to overpower Terapagos. This time, Kieran is fine with the player catching Terapagos, reconciling with them as the group returns to Blueberry Academy.

Geography

The Area Zero Underdepths is a large cavern, roughly 3,300 feet (1 kilometer) below the surface, located beneath Area Zero. It is only accessible via the elevator in Professor SadaS/Professor TuroV's Zero Lab and only unlocked by using the Indigo Disk.

From the composition of the rock, the underdepths likely formed approximately 2,000,000 years ago, predating even the formation of the Great Crater of Paldea. It experienced numerous cave-ins in the past, likely due to erosion and tectonic activity, but has remained stable since the last major cave-in. There are also indications that many objects or creatures filled the space prior to the current cavern's formation.

The Area Zero Underdepths consist of several large chambers connected by tunnels. It is filled with large Terastal crystals, similar to those found at the bottom of Area Zero. These crystals increase with depth until the deepest tunnel is made from solid crystal. Also near the bottom of the Underdepths is a subterranean lake. On an island in this lake is a large tree, seemingly covered in or made from crystal.

Several Pokémon species also inhabit the Underdepths, primarily Pokémon with an association with crystals. Prior to certain seismic shifts, Terapagos supposedly lived there before becoming nearly extinct.

Places of interest

Tera crystal clusters

There are several clusters of Tera crystals blocking paths all over the Area Zero Underdepths. These crystals are theorized to be guardians "watching" over the hidden treasure of Area Zero. According to Briar, they're likely a manifestation of pure Terastal energy. She also also has no idea what might happen if they're destroyed with brute force. For that reason, the player has to defeat a Stellar Tera type Pokémon near it, which causes the cluster to be disintegrated, allowing the player, Briar, Carmine and Kieran to continue their expedition.

Crystal tree

Terapagos slumbering in the deepest cavern of Area Zero Underdepths.

On an island in the center of a flooded cavern is a large, crystallized tree. This tree is similar to other trees up in Area Zero, however, it is completely crystallized and much bigger. The player has to go there and defeat a Stellar Tera type Garganacl so that they, Briar, Carmine, and Kieran can progress further into the Underdepths. It may be based on the Kalpavriksha, a wish-granting tree that is said to be made of various types of gemstones.

Secret cavern

A secret cavern filled with different items that is blocked by one of the Tera crystals clusters until the optional Stellar Tera type Garchomp is defeated.

Terapagos's cavern

This is the cavern where the Legendary Pokémon Terapagos slumbers in the form of a crystal. This Terapagos appears to be the last one of its kind after seismic shifts brought the species to the brink of extinction. The cavern is located at the very bottom of the Underdepths.

There, the player, Briar, Carmine, and Kieran find Terapagos. Kieran is the one to catch it, but after losing to the player one more time, Briar advises him to Terastallize it into its Stellar Form, which causes it to go out of control. However, the player and Kieran defeat it, allowing the player to catch it for good.

Items

This section is incomplete.
Please feel free to edit this section to add missing information and complete it.
Item Location Games
Stellar Tera Shard SV Stellar Tera Shard Overworld  S  V 
Ice Tera Shard SV Ice Tera Shard Overworld  S  V 
Flying Tera Shard SV Flying Tera Shard Overworld  S  V 
Ground Tera Shard SV Ground Tera Shard Overworld  S  V 
Psychic Tera Shard SV Psychic Tera Shard Overworld  S  V 
Grass Tera Shard SV Grass Tera Shard Overworld  S  V 
Fire Tera Shard SV Fire Tera Shard Overworld  S  V 
Flying Tera Shard SV Flying Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Psychic Tera Shard SV Psychic Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Bug Tera Shard SV Bug Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Rock Tera Shard SV Rock Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Ghost Tera Shard SV Ghost Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Dark Tera Shard SV Dark Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Steel Tera Shard SV Steel Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Dragon Tera Shard SV Dragon Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Fairy Tera Shard SV Fairy Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Poison Tera Shard SV Poison Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Ice Tera Shard SV Ice Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Dragon Tera Shard SV Dragon Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Steel Tera Shard SV Steel Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Normal Tera Shard SV Normal Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Fire Tera Shard SV Fire Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Water Tera Shard SV Water Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Electric Tera Shard SV Electric Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Grass Tera Shard SV Grass Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Fighting Tera Shard SV Fighting Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Ground Tera Shard SV Ground Tera Shard In cave unlocked by defeating Stellar Tera Garchomp  S  V 
Star Piece SV Star Piece Overworld  S  V 
Hard Stone SV Hard Stone Overworld  S  V 
Stardust SV Stardust Overworld  S  V 
Full Restore SV Full Restore Overworld  S  V 
Full Restore SV Full Restore Overworld  S  V 
Max Revive SV Max Revive Overworld  S  V 
Max Revive SV Max Revive Overworld  S  V 
Max Potion SV Max Potion Overworld  S  V 
Max Potion SV Max Potion Overworld  S  V 
Premier Ball SV Premier Ball In cave unlocked by defeating Stellar Tera Garchomp  S  V 
TM Water SV TM142 Overworld  S  V 
TM Fire SV TM165 Overworld  S  V 
TM Ice SV TM143 Overworld  S  V 
TM Fire SV TM141 Overworld  S  V 
TM Dragon SV TM156 Overworld  S  V 
TM Grass SV TM159 Overworld  S  V 
TM Ground SV TM150 Overworld  S  V 
TM Normal SV TM171 In cave unlocked by defeating Stellar Tera Garchomp  S  V 
TM Ground SV TM220 In cave unlocked by defeating Stellar Tera Garchomp  S  V 

Pokémon

All Pokémon that appear in this zone are considered wanderer encounters internally (rather than spawning randomly), and therefore always appear in the same locations, have the standard 1/4096 chance to be Shiny, ignore any typical bonuses applied, and are additionally ineligible for naturally generated Marks (except for the Jumbo and Mini marks).[1][2]

Species Level
CarbinkCarbink 65
CarbinkCarbink 66
GlimmoraGlimmora 69
GlimmoraGlimmora 69
GlimmoraGlimmora 70
GlimmoraGlimmora 69
GlimmetGlimmet 63
CarbinkCarbink 65
CarbinkCarbink 65
GlimmetGlimmet 63
GlimmetGlimmet 65
GlimmoraGlimmora 68
GlimmoraGlimmora 71
GlimmoraGlimmora 68
GlimmetGlimmet 67
GlimmetGlimmet 65
GlimmetGlimmet 67
CarbinkCarbink 65
GlimmoraGlimmora 75
GlimmoraGlimmora 75
GlimmoraGlimmora 75
CarbinkCarbink 67
CarbinkCarbink 69

Special encounters

Mandatory Stellar Tera Pokémon

A variety of Stellar Tera Pokémon must be defeated in order to shrink the crystals blocking the way during the events of The Indigo Disk, allowing the player, Carmine, Kieran, and Briar to progress further into the Underdepths. None of them can be caught, and they are coded to never be Shiny.

Optional Stellar Tera Pokémon

Stellar Tera Type Garchomp's location

A Garchomp can be encountered and subsequently defeated in order to shrink a crystal in the room prior to one that wraps downwards in a staircase. It cannot be caught, and is coded to never be Shiny.

Terapagos

Battling Stellar Form Terapagos

After Kieran has been defeated, he will attempt to Terastallize Terapagos, causing it to become uncontrollable. The player must battle it with no opportunity to change teams or heal from the end of the previous battle; losing this battle will revert the game back to before the player's battle against Kieran. It must be caught by the player upon its defeat, and is coded to never be Shiny. Additionally, this Terapagos is always coded to be male, despite it having a gender ratio of one male to one female.

In the battle against Stellar Form Terapagos, it has unlimited PP for all of its moves and four times the usual amount of health, with a large health bar across the top of the screen in a similar fashion to Titan Pokémon and Starmobiles, which identifies it as Terapagos, the Hidden Treasure of Area Zero. Its Teraform Zero ability does not function. Similar to a Tera Raid Battle, it can put up a shield to become immune to many status moves and reduce the damage it takes from attacking moves. The player will be unable to Terastallize their Pokémon until they charge the Tera Orb by hitting with a certain number of damaging moves, but only two attacks are required to charge it, instead of the three from standard Tera Raid Battles. Unlike Tera Raid Battles, there is no time limit and no cheering, and the player can switch Pokémon and use items from the Bag.

Terapagos will put up three shields over the course of the battle: one at the beginning, and the others immediately after the previous shield is broken. Each shield covers 27% of Terapagos's health bar, and if any attack deals enough damage to break the shield, all further damage from that attack (including from multistrike moves) is prevented, similar to Pokémon Sword and Shield's Max Raid Battles. When a new shield is put up, Terapagos is cured of any status condition, all stat modifiers to any Pokémon are erased (but other field effects such as weather and Light Screen remain in place), and if any of the player's Pokémon have been Terastallized, they lose that status. The Tera Orb must be recharged before the player can Terastallize a Pokémon again.

  • In the first phase of the battle, Terapagos is Normal type, and Carmine participates as a partner using her Sinistcha. If Sinistcha faints, the player must continue the remainder of the phase alone. If Sinistcha has not yet fainted when the shield breaks, Terapagos uses Zen Headbutt on Sinistcha at that time, even if an effect such as Imprison would normally prevent the move from being used. This extra move ignores the usual accuracy and damage formulas and is configured to deal 9999 damage; then, if Sinistcha somehow has any HP remaining afterwards, its HP will be forcefully set to 0 anyway, ensuring that Sinistcha faints and does not participate in later phases.[3][4]
  • In the second phase, Terapagos changes to a Psychic type, and the player must face it alone.
  • In the third phase, Terapagos changes to a Water type, and Kieran joins as a partner using his remaining five Pokémon. Terapagos will remain Water type after the final shield is broken.

Trainers

When Kieran is controlling Terapagos, it possesses twice the usual amount of HP and has a large HP bar at the top of the screen that identifies it as Terapagos, the Indigo Disk.

Music

Games Location Song name (Japanese) Song name (English) Composition Arrangement
 S  V  When in the Underdepths ゼロの大空洞 Area Zero Underdepths Toby Fox Hitomi Sato
During a wild
Pokémon battle
戦闘!エリアゼロのポケモン Battle! (Area Zero Pokémon) Toby Fox Go Ichinose
When Terapagos awakens from its gem 蘇ったテラパゴス Terapagos Reawakened Toby Fox
Rei Murayama
Go Ichinose
Hiromitsu Maeba
When battling Kieran's
Terapagos in the Underdepths
戦闘!テラパゴス Battle! (Terapagos) Rei Murayama
Go Ichinose
Go Ichinose
When Briar prompts Kieran
to Terastallize Terapagos
秘宝の条件 What the Hidden Treasure Needs Toby Fox Hiromitsu Maeba
When Kieran attempts to
recall Terapagos to its Poké Ball
テラパゴスの暴走 Terapagos Goes Berserk Toby Fox
Rei Murayama
Go Ichinose
Hiromitsu Maeba
When battling Stellar Form Terapagos 戦闘!ゼロの秘宝 テラパゴス Battle! (Terapagos, the Hidden Treasure of Area Zero) Rei Murayama
Toby Fox
Go Ichinose
Go Ichinose
Upon Terapagos being captured テラパゴスを捕まえた! Caught Terapagos! Toby Fox Hiromitsu Maeba

In the TCG

Area Zero Underdepths in the TCG
Main article: Area Zero Underdepths (Stellar Crown 131)

Area Zero Underdepths was introduced as a Stadium card in the Pokémon Trading Card Game during the English Scarlet & Violet Series (the Japanese Scarlet & Violet Era). It was first released in the Japanese Stellar Miracle expansion and the English Stellar Crown expansion, with artwork by MARINA Chikazawa. A gold-etched hyper rare version with artwork by the same illustrator was released in the same sets. As long as this Stadium is in play, each player may have up to 8 Benched Pokémon (an increased amount from the normal limit of 5) if they have any Tera Pokémon in play. If a player no longer has any Tera Pokémon in play, they discard Benched Pokémon until they have 5 remaining. If this Stadium is removed from play, both players discard Benched Pokémon until they have 5 remaining, and the player who played the Stadium discards first.

In other languages

Language Title
Japanese ゼロの大空洞 Zero no Daikūdō
Chinese Cantonese 零之大空洞 Lìhng jī Daaihhūngduhng
Mandarin 零之大空洞 Líng zhī Dàkōngdòng
French Abîme Zéro
German Höhlensystem Null
Indonesian Gua Besar Zero
Italian Grande Abisso Zero
Korean 제로의 대공동 Zero-ui Daegongdong
Brazilian Portuguese Abismo da Área Zero
Spanish Caverna Abisal Cero
Thai โพรงถ้ำใหญ่ซีโร่ Phrong Tham Yai Zero

References

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