Unknown Dungeon (Kalos)

	"Wild Missingno. appeared!"
Recommended Level:	{{{reclvl}}}
Map description:	{{{mapdesc}}}
Location:	Pokémon Village
Region:	Kalos
Generations:	VI
	; Location of Unknown Dungeon in Kalos.
	Pokémon world locations

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The Unknown Dungeon (Japanese: ななしの洞窟 Nameless Cave) is a very small cave in southern Kalos that can be accessed from Pokémon Village. A sole Mewtwo resides in the center with either the Mewtwonite X^X or Mewtwonite Y^Y. The Unknown Dungeon is only accessible to Trainers who enter the Hall of Fame. Surf is needed to access the cave.

Its purpose as a place to catch Mewtwo is a direct reference to Cerulean Cave in Kanto. It also shares its name with the alternative moniker for Cerulean Cave used in Japanese releases of the Generation I games.

Geography

The Unknown Dungeon is a tiny cave whose entrance is found in the side of a mountain. The cave is barren in terms of terrain aside from the occasional water drop and the few rocks that dot the floor. Mewtwo awaits the player in the center of the cave, facing away from the entrance.

Items

	Location	Games
Oval Stone	On the small stalagmite in the northwest of the cave (hidden, reappears occasionally)	X Y
Mewtwonite X	Automatically obtained after capturing Mewtwo	X
Mewtwonite Y	Automatically obtained after capturing Mewtwo	Y

Natural objects

	Location	Games
Hard Stone	Randomly found by using Hyper Voice or Rock Slide on a spiky rock during a battle	X Y
Float Stone	Randomly found by using Hyper Voice or Rock Slide on a spiky rock during a battle	X Y
Damp Rock	Found by using Muddy Water, Surf, or Water Spout on a thin rock during a battle	X Y

Special encounters

Generation VI

A Mewtwo appears here on the first visit. If defeated or run from, it respawns after entering the Hall of Fame. It is coded to never be Shiny. After being caught, it will leave behind its Mewtwonite X^X or Mewtwonite Y^Y, depending on the game.

Mewtwo Lv.70

Type:

Psychic

Ability:

Pressure

Held item:

None

Music

Games	Situation	Song name (Japanese)	Song name (English)	Composition	Arrangement
X Y	When battling Mewtwo	戦闘！ミュウツー	Battle! (Mewtwo)	Junichi Masuda	Shota Kageyama

In the manga

Pokémon Adventures

X & Y arc

The Unknown Dungeon appeared briefly in Malamar Traps, where Mewtwo was shown residing inside the cave, waiting to make its move against Team Flare, who had taken over Pokémon Village and were capturing local Pokémon to be used as a new power source for the ultimate weapon.

In other languages


Language		Title
Chinese	Cantonese	無名洞窟 Mòuhmìhng Duhngfāt
Chinese	Mandarin	無名洞窟 / 无名洞窟 Wúmíng Dòngkū
French		Grotte Inconnue
German		Geheimdungeon
Italian		Grotta Ignota
Korean		이름없는 동굴 Ireum-eomneun Donggul
Spanish	Latin America	Cueva Rara
Spanish	Spain	Mazmorra Rara

Kanto	Seafoam Islands • Power Plant • Victory Road • Cerulean Cave Route 10 • Route 25 • Pewter City • Roaming Pokémon
Sevii	Mt. Ember • Navel Rock • Birth Island
Johto	Ilex Forest • Bell Tower • Whirl Islands • Mt. Silver Cave Burned Tower • Embedded Tower • Roaming Pokémon
Hoenn	Desert Ruins • Island Cave • Ancient Tomb • Cave of Origin • Marine Cave Terra Cave • Sky Pillar • Southern Island • Sea Mauville • Scorched Slab Pathless Plain • Nameless Cavern • Fabled Cave • Gnarled Den Trackless Forest • Crescent Isle • Sky • Roaming Pokémon
Sinnoh	Acuity Cavern • Valor Cavern • Spear Pillar • Turnback Cave Rock Peak Ruins • Iceberg Ruins • Iron Ruins • Snowpoint Temple Stark Mountain • Newmoon Island • Flower Paradise • Hall of Origin Ramanas Park • Floaroma Town • Roaming Pokémon
Unova	Guidance Chamber • Trial Chamber • Rumination Field • N's Castle • Abundant Shrine Giant Chasm • Dragonspiral Tower • Liberty Garden • Route 11 • Route 13 • Route 22 Route 23 • Celestial Tower • Nacrene City • Underground Ruins • Twist Mountain Dreamyard • Marvelous Bridge • Reversal Mountain • Coastal Biome • Roaming Pokémon
Kalos	Sea Spirit's Den • Team Flare Secret HQ • Terminus Cave Unknown Dungeon • Roaming Pokémon
Alola	Route 16 • Altar of the Sunne • Altar of the Moone • Mount Lanakila • Mahalo Trail Ruins of Conflict • Ruins of Life • Ruins of Abundance • Ruins of Hope Aether Paradise • Ancient Poni Path • Lake of the Sunne • Lake of the Moone Ten Carat Hill • Resolution Cave
Galar	Tower summit • Battle Tower • Master Dojo • Crown Shrine • Max Lair Rock Peak Ruins • Iceberg Ruins • Iron Ruins • Split-Decision Ruins • Giant's Bed Frigid Sea • Lakeside Cave • Ballimere Lake • Freezington • Roaming Pokémon
Hisui	Seaside Hollow • Temple of Sinnoh • Acuity Cavern • Valor Cavern • Verity Cavern Lava Dome Sanctum • Moonview Arena • Snowpoint Temple • Turnback Cave • Bonechill Wastes Cobalt Coastlands • Ramanas Island • Scarlet Bog • Coronet Highlands • Floaro Gardens
Paldea	Grasswither Shrine • Icerend Shrine • Groundblight Shrine • Firescourge Shrine Poco Path • Area Zero • Area Zero Underdepths • Glaseado Mountain South Province (Area One) • Asado Desert • West Province (Area One) • East Province (Area Three) Casseroya Lake • North Paldean Sea • South Province (Area Four) • North Province (Area Two) Alfornada Cavern • Great Crater of Paldea • Tagtree Thicket • East Province (Area One) South Province (Area Five) • Dalizapa Passage • Pokémon League • Socarrat Trail
Kitakami	Paradise Barrens • Wistful Fields • Oni Mountain • Dreaded Den • Loyalty Plaza
Lumiose	Wild Zone 11 • Rouge Sector 2 • Wild Zone 20 • Magenta Sector 8 • Lysandre Labs Pokémon Research Lab • Rouge Sector 1 • Quasartico Inc.
Hyperspace Lumiose	Hyperspace Lumiose • Hyperspace Infernal Arena • Hyperspace Newmoon Nightmare Hyperspace Desolate Land • Hyperspace Primordial Sea • Hyperspace Sky Pillar
Other	Faraway Island • Distortion World • Sinjoh Ruins • Ultra Space Wilds