Cerulean Cave

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Cerulean Cave Unknown Dungeon		ハナダのどうくつ Hanada Cave
"Wild Missingno. appeared!"

Location:

Cerulean City

Region:

Kanto

Generations:

I, III, IV

Location of Cerulean Cave in Kanto.

Pokémon World Locations

Cerulean Cave (Japanese: ハナダのどうくつ Hanada Cave), sometimes referred to as the Unknown Dungeon (Japanese: ななしのどうくつ Nameless Cave) in Generation I, is a cave located in the northwest corner of Cerulean City in Kanto. The cave is home to a wide variety of high-level wild Pokémon. Only Trainers who compete and win in the Pokémon League at Indigo Plateau may enter, due to the potency of the Pokémon in the cave. At the end of the cave lies Mewtwo, the only one of its species in the game.

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. In FireRed and LeafGreen, the layout is true to that of the original Red and Green games, aside from the addition of Rock Smash boulders.

Another addition in FireRed and LeafGreen lies in the fact that Trainers are now required to further prove themselves before entering the cave, which is done by completing the quest on Sevii Islands and restoring the Network Machine to operational status. Another change is in the fact that more Pokémon can be found only by fishing, while wild Pokémon found just by walking around in the cave are reduced in number. In Generation I, there are also several species that make no sense to be in the cave, such as Dodrio and Pokémon that are otherwise only obtainable by stone-induced evolution; however, this has been fixed in Generation III, at the cost of some of the wild Pokémon diversity.

In Generation II, Cerulean Cave completely collapsed. However, the leftovers of Mewtwo's presence can still be 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, although, as in previous generations, a person stands in the way until the player has proven him or herself by defeating all eight Kanto Gym Leaders.

CERULEAN CAVE
A mysterious cave that is filled
with terribly tough POKéMON.
It is so dangerous, the POKéMON
LEAGUE is in charge of it.

Geography

Misty entrance to Cerulean Cave

Cerulean Cave is a large underground complex of maze-like tunnels which extend out from Cerulean City to the mountains beyond. With the misty, dark entrance positioned on the outskirts of Cerulean City, only to be accessed 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 mouth into the hill. A thick layer of mist surrounds the area and silhouettes of dark trees can be seen in the background. An Ace Trainer guards the mouth of the cave and only allows powerful Trainers who own all eight Gym badges and have competed in and won the Pokémon League beating the Elite Four to enter its premises.

It is unknown whether Cerulean Cave was formed naturally through the process of weathering, built by man through the use of excavation, or perhaps by the Pokémon Mewtwo, which is the cave's most powerful resident; however, it is most likely formed by natural means. Pictures of the cave suggest it is a solutional cave, which was formed in the soluble rock, limestone, which is dissolved by natural acid in groundwater that seeps through the rock, forming the cave systems. Because of this, stalactites and stalagmites have formed in the cave while water rises from the floor and drips from the ceiling.

Encountering Mewtwo at the end of the tunnel

Because of its damp and dark environment, Cerulean Cave hosts a large array of different Pokémon well and truly beyond average levels. These Pokémon have possibly gained this amount of experience from living in an area uninhabited by humans, adapting to their environment. Pokémon such as Golbat and Venomoth are able to see their way through the darkness, while other powerful Pokémon like Hypno and Rhydon live in their habitat. All the Pokémon inhabiting Cerulean Cave have levels well over 40 and 50, with some even rising as high as 60, which is why the cave was sealed off and is forbidden to be entered unless Trainers own all eight Gym badges and have competed in and won the Pokémon League, beating the Elite Four. At the deepest point of the cave lives Mewtwo, a Pokémon that can only be found in Cerulean Cave alone. Mewtwo was created by man in the Pokémon Mansion before it became too powerful and escaped, destroying the Mansion and exiling itself to the cave, never to be seen again. If Mewtwo had created Cerulean Cave as a residence during this event, the cave would have been recently formed – according to the Pokémon Mansion journals, Mewtwo had escaped the Pokémon Mansion only recently.

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. In FireRed and LeafGreen, the layout is true to that of the original Red and Green games, aside from the addition of Rock Smash boulders. However, besides these changes, the first floor 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.

Items

	Location	Games
Full Restore ×2	On the riverbank near the southwest corner of the first floor Center of the second floor	R B
Rare Candy	On a rock on the central plateau (hidden)	R B
Max Elixir	On the riverbank on the first floor	R B
Max Revive	North edge of the basement	R B
Nugget	Near the northwest corner of the first floor	R B
PP Up	East edge of the second floor	R B
Ultra Ball ×3	Southwest corner of the second floor Center of the basement On the rock that stands out right before the water to Mewtwo (hidden)	R B
Max Elixir ×2	West of the entrance on the first floor North edge of the basement	Y
Full Restore	East edge of the second floor	Y
Max Revive ×3	East edge of the first floor Southeast of the second floor's center Center of an elevated area in the basement	Y
Rare Candy ×2	Southeast corner of the first floor West edge of the second floor	Y
Ultra Ball ×4	Center of the first floor Center of the second floor Center of an elevated area in the basement Northeast corner of the basement	Y
PP Up ×3	On a single rock just east of center on the first floor (hidden) On a single rock a bit south of center of the second floor (hidden) On the rock that stands out close to the waterway to the plateau with two visible items (hidden)	Y
Full Restore ×2	On the riverbank near the southwest corner of the first floor Against the eastern edge of the second floor	FR LG
Max Elixir	Near the center of the first floor	FR LG
Max Revive	In the northeast corner of the basement	FR LG
Nugget	In the northwest corner of the first floor	FR LG
PP Up	Near the southwest corner of the second floor	FR LG
Ultra Ball ×3	Near the southeast corner of the second floor Near the Nugget on 1F (hidden) At the center of the basement on the central rock ledge	FR LG
TM24 (Thunderbolt)	North-east corner of 2F	HG SS
Nugget	Near the northwest corner of 1F	HG SS
PP Up	West side of 2F	HG SS
Hyper Potion	1F, on the wall behind the smashable rocks in the south-west corner (hidden)	HG SS
Full Restore	Along south wall of 1F	HG SS
Ultra Ball	In the large open area on the east side of 2F (hidden)	HG SS
Zinc	In the large open area on the east side of 2F (hidden)	HG SS
Full Heal	In the large open area on the east side of 2F (hidden)	HG SS
PP Up	In the large open area on the east side of 2F, in the isolated crystal in the bottom left (hidden)	HG SS
Big Pearl	In the large open area on the east side of 2F (hidden)	HG SS
Revive	On a small crystal in the middle of 1F (hidden)	HG SS
Max Elixir	Near the center of the first floor at the end of a bridge	HG SS
Sea Incense	North edge of 1F	HG SS
Rare Candy	In the far south-east corner of 1F (hidden)	HG SS
Ultra Ball x2	West side of 2F West of the smashable rocks in the center of B1F (hidden)	HG SS
Odd Incense	Near the center of the second floor	HG SS
Protein	Near north-west corner of 2F (hidden)	HG SS
Max Revive	Among the smashable rocks on the west side of B1F (hidden)	HG SS
Max Revive	Center of northwest of the smashable rocks in the center of B1F (hidden)	HG SS
Ultra Ball	Near south-west corner of B1F	HG SS
Dusk Stone	Center of basement (requires Rock Climb)	HG SS
Nugget	Behind a lone smashable rock north-east of the rocks in the center of B1F (hidden)	HG SS
Electirizer	North-east corner of B1F (requires Rock Climb)	HG SS
Black Sludge	South-east corner of basement	HG SS

Rock Smash

	Location	Games
Red Shard	Randomly found by smashing rocks	HG SS
Blue Shard	Randomly found by smashing rocks	HG SS
Yellow Shard	Randomly found by smashing rocks	HG SS
Green Shard	Randomly found by smashing rocks	HG SS
Heart Scale	Randomly found by smashing rocks	HG SS
Revive	Randomly found by smashing rocks	HG SS
Max Ether	Randomly found by smashing rocks	HG SS
Star Piece	Randomly found by smashing rocks	HG SS