Nameless Cave redirects here. For the location in Hoenn with a similar name, see Nameless Cavern.
Cerulean Cave (Japanese: ハナダの洞窟Hanada Cave), introduced as Unknown Dungeon (Japanese: ななしのどうくつNameless Cave), is a cave located in the northwest corner of Cerulean City in Kanto.
Cerulean Cave Unknown Dungeon
ハナダの洞窟 Hanada Cave
"Wild Missingno. appeared!"
Recommended Level:
{{{reclvl}}}
Map description:
A mysterious cave that is filled with terribly tough Pokémon. It is so dangerous, the Pokémon League is in charge of it.FRLG A cave that had collapsed once. It has been reconstructed.HGSS
The English name Cerulean Cave is used in all games that reference this location from Generation I onward, including at the Pokédex in Pokémon Stadium 2. In Pokémon Red, Blue, and Yellow, it is used by the NPC blocking the entrance and on the Town Map (visible only inside the cave), though the Japanese map name is 「ななしのどうくつ」 (Nameless Cave). In Pokémon Gold, Silver, and Crystal, the name appears in game data but is unused as the cave does not appear; the Poké Seer in Crystal can read this location for Pokémon data, though this is unobtainable in normal gameplay.
The Japanese name 「ハナダ どうくつ」 (Hanada Cave) is used in Pokémon Red, Green, Blue, and Yellow, appearing in NPC dialogue and an email in Cinnabar Lab (translated in English as "the cavern close to Cerulean").
In Pokémon FireRed and LeafGreen, more Pokémon can be found only by fishing, while there are fewer different species of wild Pokémon found by walking around in the cave.
In Generation II, Cerulean Cave completely collapsed but the leftovers of Mewtwo's presence remain and are found in the lake near the cave, in the form of the item Berserk Gene. In Pokémon HeartGold and SoulSilver, Cerulean Cave has been rebuilt and Mewtwo can once again be found inside. In Pokémon HeartGold and SoulSilver, if Mew is brought along, it will sense Mewtwo's presence and act apprehensive.
Geography
Encountering Mewtwo in the cave in Let's Go, Pikachu! and Let's Go, Eevee!
Cerulean Cave is a large underground complex of maze-like tunnels which extend out from Cerulean City to the mountains beyond. With the dark entrance positioned on the outskirts of Cerulean City, only accessible by surfing down Route 24 to the entrance near the northern border of Cerulean City, the cave has been renowned for its mystery. The entrance to the cave looks like it has been carved out from a hillside, forming an indented entrance into the hill. An NPC guards the entrance to the cave and only allows Trainers who own all eight Kanto Gym Badges and have entered the Hall of Fame to enter.
At the deepest point of the cave lives Mewtwo, a Pokémon that can only be found in Cerulean Cave. Mewtwo was artificially created in the Pokémon Mansion before it became too powerful and escaped, exiling itself to the cave, never to be seen again.
Cerulean Cave has had many different layouts over time, getting a change from not only one generation to the next but also from one game release to the next. Despite these changes, the first floor is mostly unaffected and has a large underground lake which covers most of the area. Using the complex of stairs and ladders, Trainers can make their way around the lake and the first floor of the cave. They will reach the upper floor, which has no underground river, but a like maze-like structure formed by large boulders and rocks that must be maneuvered around in order to reach the end. Once Trainers get through the maze formation, they are able to climb the ladders and get around the underground lake on the basement floor, which will lead them straight to a dead end and to Mewtwo.
These items are hidden at certain spots of the cave and respawn occasionally or daily. The item received is not determined until it is picked up, so what item is found can be affected by resetting. Unlike Celadon Game Corner, where the game will only respawn the item every midnight, in Cerulean Cave most items will try to reappear every 256 steps; to respawn the items after collecting them, the player must leave the floor and also take enough steps (the player can accomplish this by going down a ladder, coming back up the ladder, and walking around until the items respawn).
The item on B1F plateau next to Mewtwo's respawns every midnight like in Celadon Game Corner; the spots on 2F respawn based on steps with following odds:[1][2]
Poké Balls
Northern spot next to a pair of ladders on 2F (20%)
Northeastern spot next to a pair of ladders on 2F (15%)
Northwestern spot next to a pair of ladders on 2F (15%)
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
In Pokémon HeartGold and SoulSilver, the layout of the first and second floors is based on the equivalent layout from Pokémon FireRed and LeafGreen, while the layout of the basement is based on the respective layout from Pokémon Yellow. Breakable rocks are also present and Rock Climb surfaces were added.
In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, the layout of the entire cave is based on the original Red and Green layout, though the top floor has been modified to be an open space with no walls.
Cerulean Cave appeared in File 4: Charizard. It was first mentioned by Blue, who had gone to the cave after hearing rumors of an extremely strong Pokémon living in there. He intended to catch it, but got badly injured while battling it when his Blastoise was sent flying and crashed on top of him. After he had told Professor Oak and Red about this, Red soon recalled the journals he had found at the Pokémon Mansion at Cinnabar Island, and understood that the mysterious Pokémon was in fact Mewtwo, an artificial Pokémon created by enhancing the powers of Mew.
Wanting to help Professor Oak to complete the Pokédex, Red then headed to Cerulean Cave, where he encountered Mewtwo. Being amazingly strong and durable, Mewtwo was capable of defeating almost all of Red's Pokémon, excluding only his Charizard. At first, even Charizard was losing, and was sent into the waters of the cave, along with Red. However, Red's Key Stone and Charizard's Mega Stone then activated, Mega Evolving Charizard into Mega Charizard X and making it able to defeat Mewtwo, allowing Red to catch it.
Cerulean Cave appeared in The Discovery, where Trace and Green both entered it in order to find and catch Mewtwo. When Trace's Pidgeot was badly hurt by a swarm of Zubat and Golbat, he was forced to give up the race, allowing Green to reach the end of the cave first. There, however, she was upset to find out that Elaine had managed to catch Mewtwo first, and challenged her to a battle over it. However, despite using her MegaBlastoise, Green was still defeated when Elaine used Mewtwo against her. Green then handed Elaine Mewtwo's Mega Stones as a prize and jokingly suggested that she and Mewtwo should become her Pokémon, before leaving.
Cerulean Cave appeared in And Mewtwo Too?! and And Mewtwo... Three!. Upon hearing from Bill about a monster that had caused massive destruction in the northwest sector of Cerulean City, Red went to investigate Cerulean Cave, where the monster was said to have fled to. Once Red arrived at the cave, he and his Pokémon were soon caught in a tornado, which seemed to originate from inside the cave. Red and his Pokémon were saved from being blown away by Blaine and his Rapidash. Blaine explained that the tornado was actually Psywave, a Psychic-typemove capable of both attacking and defending at the same time, and the user of the move was Mewtwo, the "beast" sighted in Cerulean City.
Blaine revealed that he, while working as a scientist in Team Rocket, had been involved in Mewtwo's creation. Since Team Rocket had been unable to get enough of Mew's DNA to complete the Genetic Pokémon, Blaine had finished it by using cells from his own arm. In the process, some of Mewtwo's cells had ended up in his arm, causing it to become horribly mutatated, much to Red's horror. This also gave both Blaine and Mewtwo the ability to sense each other's presence. However, the mutated cells in his arm were slowly spreading to the rest of his body, and would eventually kill him. Realizing what kind of an abomination he had created, Blaine had subsequently left Team Rocket.
Blaine was determined to destroy the monster he himself had created, even if it would cost him his life. After putting Red inside of a protective fireball, he and Rapidash charged through the Psywave tornado at Mewtwo, creating a massive explosion. Despite the hit, Mewtwo was still capable of fighting. As Blaine was down for the count, Red tried to battle Mewtwo himself, sending out his Poliwrath. However, Mewtwo easily knocked the Tadpole Pokémon back with a giant spoon it created. Blaine explained that Mewtwo would form its Psywave into a tornado while fighting multiple enemies at once, and into a spoon for a single enemy. This gave Red an idea, and he sent out all of his Pokémon, causing Mewtwo to switch into its tornado tactic again. However, before the tornado got to full power, Red dived into the eye of the storm with his Aerodactyl, and sent his Pikachu diving further down into Mewtwo itself, catching it with the Master Ball that Blaine had given to Red just moments earlier. Afterwards, Red gave Mewtwo to Blaine and asked him to teach it the kindness of humans.
Pokémon Zensho
Cerulean Cave was mentioned in PZ10, where Professor Oak showed Satoshi and Shigeru a photo of Mewtwo taken within the cave. The two young Trainers subsequently headed for the cave to capture Mewtwo together.
Trivia
Cerulean Cave on the map
In the Generation I games, Cerulean Cave is only listed in the Town Map if the player uses this item while inside the cave. However, Cerulean Cave is not listed at all in the Pokémon location map from the Pokédex, likely to keep its existence as a secret until the player beats the game. For instance, Rhydon is only available at the Cerulean Cave in Pokémon Red and Blue, but Rhydon's Pokédex map simply says "Area unknown". Similarly, Golbat is available in multiple places including the Cerulean Cave, but only the other places are shown in the Pokédex map.
FRLG
HGSS Morning (Ditto)
HGSS Day/Evening (Ditto)
HGSS Night (Magneton)
