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White Treehollow 白の樹洞
White Tree Hollow
"Wild Missingno. appeared!"
White Treehollow W2.png
Map description: {{{mapdesc}}}
Location: White Forest
Region: Unova
Generations: V
Unova Black City White Forest Black Tower White Treehollow Map.png
Location of White Treehollow in Unova.
Pokémon world locations

White Treehollow (Japanese: 白の樹洞 White Tree Hollow) is a training facility initially exclusive to Pokémon White 2. Located within White Forest, it is the counterpart to the Black Tower of Pokémon Black 2.

If a player of White 2 clears Area 5 of the White Treehollow, that player can send the Treehollow Key to Black 2 players, granting them access to White Forest, and consequently, the White Treehollow.



The interior of the White Treehollow

The White Treehollow was established in White Forest between the events of Pokémon White and Pokémon White 2. The player cannot challenge it until they have defeated Alder in Floccesy Town after entering the Hall of Fame.

It comprises ten randomly generated, progressively more complex areas, each with a number of Trainers. Each area contains a gate Trainer and a Boss Trainer. Defeating the gate Trainer of an area unlocks the area's Boss Trainer room, while defeating an area's Boss Trainer allows the player to challenge the next area. Other Trainers in each area may also be challenged. A Nurse on each floor will heal the player's Pokémon after being defeated in battle, but only once. Some rooms will contain various puzzles allowing for players to use HM moves like Cut or Strength to more easily maneuver the room. Unlike true battle facilities, the player will earn experience and money in battles. The player will forfeit the money earned during a challenge if the player loses or retires.

The Trainers in each area have a randomly selected team of two Pokémon from a personalized pool of about nine Pokémon. The Boss Trainer of each area has three Pokémon, which are fixed for each battle. The levels increase as the player progresses through the areas, with vast level differences between the first and the tenth area. The Boss Trainers' Pokémon have slightly higher levels than those of other Trainers in the area, and they will be holding a wider variety of items, including Black Sludge, Focus Sash, Life Orb, or Gems.

Starting from Area 6, the areas are separated into different floors, which the player has to explore in order to find the gate Trainer and/or the Boss Trainer. Each floor has its own set of rooms, Trainers, and Nurse.

Pokémon seen by the player while battling within the White Treehollow do not contribute to Pokémon seen in the player's Pokédex.


Upon defeating the Boss Trainer of an area, the player is rewarded with one or two items within a selection, as presented below. As can be observed, players are rewarded much less for completing Areas 6-9 (and arguably 10) than they are for completing Areas 1-5, although the former have higher difficulty and require much more time to complete.

Area Reward
Areas 1-3 HP Up HP Up
Protein Protein
Iron Iron
Calcium Calcium
Zinc Zinc
Carbos Carbos
Areas 4-5 HP Up HP Up ×2
Protein Protein ×2
Iron Iron ×2
Calcium Calcium ×2
Zinc Zinc ×2
Carbos Carbos ×2
Area Reward
Areas 6-7 Health Wing Health Wing
Muscle Wing Muscle Wing
Resist Wing Resist Wing
Genius Wing Genius Wing
Clever Wing Clever Wing
Swift Wing Swift Wing
Rare Candy Rare Candy
Areas 8-9 Health Wing Health Wing ×2
Muscle Wing Muscle Wing ×2
Resist Wing Resist Wing ×2
Genius Wing Genius Wing ×2
Clever Wing Clever Wing ×2
Swift Wing Swift Wing ×2
Rare Candy Rare Candy ×2
Area Reward
Area 10 Pomeg Berry Pomeg Berry
Kelpsy Berry Kelpsy Berry
Qualot Berry Qualot Berry
Hondew Berry Hondew Berry
Grepa Berry Grepa Berry
Tamato Berry Tamato Berry
Rare Candy Rare Candy

In addition, players of White 2 will also receive the Treehollow key to send to Black 2 players upon completing Area 5 for the first time.

Boss Trainers

The Boss Trainers always use their same set of three Pokémon. Benga is the Boss Trainer of Area 10 in White 2, and upon first visit in Black 2. Players of Black 2 will face Jariel instead of Benga on subsequent visits. Each Boss Trainer has their Pokémon with 3 levels more and gives the player PokémonDollar.png600 more than the previous area's Boss Trainer.

Area 1

Area 2

Area 3

Area 4

Area 5

Area 6

Area 7

Area 8

Area 9

Area 10

White 2

Black 2 (subsequent visits)


  • The ordinary Boss Trainers follow an alphabetical naming pattern, having initials A through J in the English versions, and ア a through ワ wa in Japanese versions.
  • Any Pokémon Breeder found here will own two members of the Chansey evolution family.
  • All non-Boss Trainers in the White Treehollow will use Pokémon that give out either HP, Attack, or Defence EVs, depending on the Trainer Class being fought.
  • Although the White Treehollow disables the Bag menu in and outside of battle, making players unable to use healing items such as Potions, players are able to heal their Pokémon by using HP-restoring Pass Powers, and can utilize the Pokémon menu to make their Pokémon hold any item, including those with in-battle healing/curing effects.
  • With 20 floors, White Treehollow is tied with Black Tower for having the most accessible floors out of any known location in the Pokémon world.

In other languages

Language Title
France Flag.png French Arbre Creux Blanc
Germany Flag.png German Weiße Baumhöhle
Italy Flag.png Italian Antro dell'Albero Bianco
South Korea Flag.png Korean 백의 수동 Baegui Sudong
Spain Flag.png Spanish Cavernogal Blanco

See also

Trio Badge.png Basic Badge.png Insect Badge.png Bolt Badge.png Quake Badge.png Jet Badge.png Freeze Badge.png Legend Badge.png
Basic Badge.png Toxic Badge.png Insect Badge.png Bolt Badge.png Quake Badge.png Jet Badge.png Legend Badge.png Wave Badge.png
Nuvema TownAccumula TownStriaton CityNacrene CityCastelia CityNimbasa CityAnville Town
Driftveil CityMistralton CityIcirrus CityOpelucid CityPokémon LeagueLacunosa TownUndella Town
Black CityWhite ForestAspertia CityFloccesy TownVirbank CityLentimas TownHumilau City
Bridges and tunnels
Skyarrow BridgeDriftveil DrawbridgeTubeline BridgeVillage BridgeMarvelous BridgeMarine Tube
DreamyardWellspring CavePinwheel ForestLiberty GardenDesert ResortRelic CastleBattle SubwayLostlorn Forest
Cold StorageMistralton CaveChargestone CaveCelestial TowerTwist MountainDragonspiral TowerMoor of Icirrus
Challenger's CaveVictory Road (BWB2W2) • N's CastleRoyal UnovaGiant ChasmUndella BayAbyssal Ruins
Abundant ShrinePoké Transfer LabP2 LaboratoryEntralinkUnity TowerFloccesy RanchPledge GroveVirbank Complex
Pokéstar StudiosCastelia SewersJoin AvenueCave of BeingPokémon World TournamentReversal MountainPlasma Frigate
Clay TunnelUnderground RuinsStrange HouseRelic PassageSeaside CaveWhite TreehollowBlack Tower
Access to
Nature Preserve

Project Locations logo.png This article is part of Project Locations, a Bulbapedia project that aims to write comprehensive articles on every location in the Pokémon world.