View source for Cerulean Cave

{{Infobox location
|image=HGSS Cerulean Cave-{{#switch: {{#time: G}}|4|5|6|7|8|9=Morning|10|11|12|13|14|15|16=Day|17|18|19=Evening|20|21|22|23|0|1|2|3=Night}}.png
|type=cave
|location_name=Cerulean Cave
|japanese_name=ハナダのどうくつ
|translated_name=Hanada Cave
|other_info=Unknown Dungeon
|location=[[Cerulean City]]
|region=Kanto
|generation={{gen|I}}, {{gen|III}}, {{gen|IV}}
|map=Cerulean_Cave_map.gif
}}

'''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 {{p|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 {{2v2|FireRed|LeafGreen}}, the layout is true to that of the original {{2v2|Red|Green}} games, aside from the addition of {{m|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 {{p|Dodrio}} and Pokémon that are otherwise only obtainable by [[evolutionary stone|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 {{p|Mewtwo}}'s presence can still be found in the lake near the cave, in the form of the item [[In-battle effect item#Berserk_Gene|Berserk Gene]].

In {{game|HeartGold and SoulSilver|s}}, Cerulean Cave has been rebuilt and {{p|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.

==Geography==
[[File:FL Cerulean Cave.png|thumb|200px|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 {{rt|24|Kanto}} 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 badge]]s 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 {{p|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, {{wp|limestone}}, which is dissolved by natural acid in groundwater that seeps through the rock, forming the cave systems. Because of this, {{wp|stalactites}} and {{wp|stalagmites}} have formed in the cave while water rises from the floor and drips from the ceiling.
[[File:Mewtwo.png|thumb|left|Encountering {{p|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 {{p|Golbat}} and {{p|Venomoth}} are able to see their way through the darkness, while other powerful Pokémon like {{p|Hypno}} and {{p|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 badge]]s and have competed in and won the [[Pokémon League]], beating the [[Elite Four]]. At the deepest point of the cave lives {{p|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 {{2v2|FireRed|LeafGreen}}, the layout is true to that of the original {{2v2|Red|Green}} games, aside from the addition of {{m|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 first 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 {{p|Mewtwo}}.

==Items==
{{Itlisth|cave}}
{{Itlistbod|Full Restore|
*On the riverbank near the southwest corner of the first floor
*Center of the second floor|RB|display=[[Full Restore]] ×2}}
{{Itlistbod|Max Elixir|On the riverbank on the first floor|RB}}
{{Itlistbod|Max Revive|North edge of the basement|RB}}
{{Itlistbod|Nugget|Near the northwest corner of the first floor|RB}}
{{Itlistbod|PP Up|East edge of the second floor|RB}}
{{Itlistbod|Ultra Ball|
*Southwest corner of the second floor
*Center of the basement|RB|display=[[Ultra Ball]] ×2}}
{{Itlistbod|Max Elixir|
*West of the entrance on the first floor
*North edge of the basement|Y|display=[[Max Elixir]] ×2}}
{{Itlistbod|Full Restore|East edge of the second floor|Y}}
{{Itlistbod|Max Revive|
*East edge of the first floor
*Southeast of the second floor's center
*Center of an elevated area in the basement|Y|display=[[Max Revive]] ×3}}
{{Itlistbod|Rare Candy|
*Southeast corner of the first floor
*West edge of the second floor|Y|display=[[Rare Candy]] ×2}}
{{Itlistbod|Ultra Ball|
*Center of the first floor
*Center of the second floor
*Center of an elevated area in the basement
*Northeast corner of the basement|Y|display=[[Ultra Ball]] ×4}}
{{Itlistbod|Full Restore|
*On the riverbank near the southwest corner of the first floor
*Against the eastern edge of the second floor|FRLG|display=[[Full Restore]] ×2}}
{{Itlistbod|Max Elixir|Near the center of the first floor|FRLG}}
{{Itlistbod|Max Revive|In the northeast corner of the basement|FRLG}}
{{Itlistbod|Nugget|In the northwest corner of the first floor|FRLG}}
{{Itlistbod|PP Up|Near the southwest corner of the second floor|FRLG}}
{{Itlistbod|Ultra Ball|
*Near the southeast corner of the second floor
*Near the center of the basement|FRLG|display=[[Ultra Ball]] ×2}}
{{Itlistbod|TM Electric|North-east corner of 2F|HGSS|display={{TM|24|Thunderbolt}}}}
{{Itlistbod|Hyper Potion|1F, on the wall behind the {{m|Rock Smash|smashable rocks}} in the south-west corner ''(hidden)''|HGSS}}
{{Itlistbod|Full Restore|Along south wall of 1F|HGSS}}
{{Itlistbod|Revive|On a small crystal in the middle of 1F ''(hidden)''|HGSS}}
{{Itlistbod|Max Elixir|Near the center of the first floor at the end of a bridge|HGSS}}
{{Itlistbod|Sea Incense|North edge of 1F|HGSS}}
{{Itlistbod|Rare Candy|In the far south-east corner of 1F ''(hidden)''|HGSS}}
{{Itlistbod|Ultra Ball|West side of 2F|HGSS}}
{{itlistbod|PP Up|West side of 2F|HGSS}}
{{itlistbod|Ultra Ball|In the large open area on the east side of 2F ''(hidden)''|HGSS}}
{{itlistbod|Zinc|In the large open area on the east side of 2F ''(hidden)''|HGSS}}
{{itlistbod|Full Heal|In the large open area on the east side of 2F ''(hidden)''|HGSS}}
{{itlistbod|PP Up|In the large open area on the east side of 2F ''(hidden)''|HGSS}}
{{itlistbod|Big Pearl|In the large open area on the east side of 2F ''(hidden)''|HGSS}}
{{Itlistbod|Odd Incense|Near the center of the second floor|HGSS}}
{{Itlistbod|Protein|Near north-west corner of 2F ''(hidden)''|HGSS}}
{{itlistbod|Max Revive|Among the {{m|Rock Smash|smashable rocks}} on the west side of B1F ''(hidden)''|HGSS}}
{{itlistbod|Max Revive|Center of north edge of B1F|HGSS}}
{{itlistbod|Ultra Ball|Near south-west corner of B1F|HGSS}}
{{Itlistbod|Dusk Stone|Center of basement|HGSS}}
{{Itlistbod|Ultra Ball|West of the {{m|Rock Smash|smashable rocks}} in the center of B1F ''(hidden)''|HGSS}}
{{Itlistbod|Nugget|Behind a lone {{m|Rock Smash|smashable rock}} north-east of the rocks in the center of B1F ''(hidden)''|HGSS}}
{{Itlistbod|Electirizer|North-east corner of B1F|HGSS}}
{{Itlistbod|Black Sludge|South-east corner of basement|HGSS}}
{{Itlistfoot|cave}}

===Rock Smash===
{{Itlisth|cave}}
{{Itlistbod|Red Shard|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Blue Shard|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Yellow Shard|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Green Shard|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Heart Scale|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Revive|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Max Ether|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistbod|Star Piece|Randomly found by {{m|Rock Smash|smashing}} rocks|HGSS}}
{{Itlistfoot|cave}}

==Pokémon==
===[[Generation I]]===
{| width="30%" class="expandable"
| 
====1F====
|-
|
{{catch/header|cave|no}}
{{catch/entry1|042|Golbat|yes|yes|no|Cave|46|25%|type1=Poison|type2=Flying}}
{{catch/entry1|042|Golbat|no|no|yes|Cave|50-55|40%|type1=Poison|type2=Flying}}
{{catch/entry1|082|Magneton|yes|yes|no|Cave|46|15%|type1=Electric}}
{{catch/entry1|097|Hypno|yes|yes|no|Cave|46|15%|type1=Psychic}}
{{catch/entry1|075|Graveler|no|no|yes|Cave|45|15%|type1=Rock|type2=Ground}}
{{catch/entry1|024|Arbok|yes|no|no|Cave|52|10%|type1=Poison}}
{{catch/entry1|028|Sandslash|no|yes|yes|Cave|52|10%|type1=Ground}}
{{catch/entry1|049|Venomoth|yes|yes|no|Cave|49|10%|type1=Bug|type2=Poison}}
{{catch/entry1|049|Venomoth|no|no|yes|Cave|54|5%|type1=Bug|type2=Poison}}
{{catch/entry1|085|Dodrio|yes|yes|no|Cave|49|10%|type1=Normal|type2=Flying}}
{{catch/entry1|044|Gloom|no|no|yes|Cave|55|10%|type1=Grass|type2=Poison}}
{{catch/entry1|070|Weepinbell|no|no|yes|Cave|55|10%|type1=Grass|type2=Poison}}
{{catch/entry1|047|Parasect|yes|yes|no|Cave|52|5%|type1=Bug|type2=Grass}}
{{catch/entry1|047|Parasect|no|no|yes|Cave|54|5%|type1=Bug|type2=Grass}}
{{catch/entry1|064|Kadabra|yes|yes|no|Cave|49|5%|type1=Psychic}}
{{catch/entry1|026|Raichu|yes|yes|no|Cave|53|4%|type1=Electric}}
{{catch/entry1|132|Ditto|yes|yes|no|Cave|53|1%|type1=Normal}}
{{catch/entry1|132|Ditto|no|no|yes|Cave|55-60|5%|type1=Normal}}
{{catch/div|water|Fishing}}
{{catch/entry1|129|Magikarp|yes|yes|yes|Fish Old|5|100%|type1=Water}}
{{catch/entry1|060|Poliwag|yes|yes|yes|Fish Good|10|50%|type1=Water}}
{{catch/entry1|118|Goldeen|yes|yes|yes|Fish Good|10|50%|type1=Water}}
{{catch/entry1|118|Goldeen|no|no|yes|Fish Super|25|40%|type1=Water}}
{{catch/entry1|080|Slowbro|yes|yes|no|Fish Super|23|25%|type1=Water|type2=Psychic}}
{{catch/entry1|098|Krabby|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|117|Seadra|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|119|Seaking|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|119|Seaking|no|no|yes|Fish Super|35-55|60%|type1=Water}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
| 
====2F====
|-
|
{{catch/header|cave|no}}
{{catch/entry1|042|Golbat|no|no|yes|Cave|52-57|40%|type1=Poison|type2=Flying}}
{{catch/entry1|085|Dodrio|yes|yes|no|Cave|51|25%|type1=Normal|type2=Flying}}
{{catch/entry1|049|Venomoth|yes|yes|no|Cave|51|15%|type1=Bug|type2=Poison}}
{{catch/entry1|064|Kadabra|yes|yes|no|Cave|51|15%|type1=Psychic}}
{{catch/entry1|075|Graveler|no|no|yes|Cave|50|15%|type1=Rock|type2=Ground}}
{{catch/entry1|101|Electrode|yes|yes|no|Cave|52|10%|type1=Electric}}
{{catch/entry1|105|Marowak|yes|yes|no|Cave|52|10%|type1=Ground}}
{{catch/entry1|112|Rhydon|yes|yes|no|Cave|52|10%|type1=Rock|type2=Ground}}
{{catch/entry1|112|Rhydon|no|no|yes|Cave|58-60|5%|type1=Rock|type2=Ground}}
{{catch/entry1|028|Sandslash|no|no|yes|Cave|56|10%|type1=Ground}}
{{catch/entry1|111|Rhyhorn|no|no|yes|Cave|50|10%|type1=Rock|type2=Ground}}
{{catch/entry1|040|Wigglytuff|yes|yes|no|Cave|54|5%|type1=Normal}}
{{catch/entry1|113|Chansey|yes|yes|no|Cave|56|5%|type1=Normal}}
{{catch/entry1|132|Ditto|yes|yes|no|Cave|55-60|5%|type1=Normal}}
{{catch/entry1|132|Ditto|no|no|yes|Cave|60|10%|type1=Normal}}
{{catch/entry1|044|Gloom|no|no|yes|Cave|58|5%|type1=Grass|type2=Poison}}
{{catch/entry1|070|Weepinbell|no|no|yes|Cave|58|5%|type1=Grass|type2=Poison}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
| 
====B1F====
|-
|
{{catch/header|cave|no}}
{{catch/entry1|042|Golbat|no|no|yes|Cave|54-59|40%|type1=Poison|type2=Flying}}
{{catch/entry1|112|Rhydon|yes|yes|no|Cave|55|25%|type1=Rock|type2=Ground}}
{{catch/entry1|112|Rhydon|no|no|yes|Cave|62|10%|type1=Rock|type2=Ground}}
{{catch/entry1|101|Electrode|yes|yes|no|Cave|55|15%|type1=Electric}}
{{catch/entry1|105|Marowak|yes|yes|no|Cave|55|15%|type1=Ground}}
{{catch/entry1|075|Graveler|no|no|yes|Cave|55|15%|type1=Rock|type2=Ground}}
{{catch/entry1|026|Raichu|yes|yes|no|Cave|64|10%|type1=Electric}}
{{catch/entry1|047|Parasect|yes|yes|no|Cave|64|10%|type1=Bug|type2=Grass}}
{{catch/entry1|113|Chansey|yes|yes|no|Cave|64|10%|type1=Normal}}
{{catch/entry1|113|Chansey|no|no|yes|Cave|56|5%|type1=Normal}}
{{catch/entry1|132|Ditto|yes|yes|no|Cave|63-67|10%|type1=Normal}}
{{catch/entry1|132|Ditto|no|no|yes|Cave|60-65|15%|type1=Normal}}
{{catch/entry1|111|Rhyhorn|no|no|yes|Cave|52|10%|type1=Rock|type2=Ground}}
{{catch/entry1|024|Arbok|yes|no|no|Cave|57|5%|type1=Poison}}
{{catch/entry1|028|Sandslash|no|yes|no|Cave|57|5%|type1=Ground}}
{{catch/entry1|108|Lickitung|no|no|yes|Cave|50-55|5%|type1=Normal}}
{{catch/div|water|Fishing}}
{{catch/entry1|129|Magikarp|yes|yes|yes|Fish Old|5|100%|type1=Water}}
{{catch/entry1|060|Poliwag|yes|yes|yes|Fish Good|10|50%|type1=Water}}
{{catch/entry1|118|Goldeen|yes|yes|yes|Fish Good|10|50%|type1=Water}}
{{catch/entry1|118|Goldeen|no|no|yes|Fish Super|25|40%|type1=Water}}
{{catch/entry1|080|Slowbro|yes|yes|no|Fish Super|23|25%|type1=Water|type2=Psychic}}
{{catch/entry1|098|Krabby|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|117|Seadra|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|119|Seaking|yes|yes|no|Fish Super|23|25%|type1=Water}}
{{catch/entry1|119|Seaking|no|no|yes|Fish Super|35-55|60%|type1=Water}}
{{catch/div|cave|Special}}
{{catch/entry1|150|Mewtwo|yes|yes|yes|Special|70|One|type1=Psychic}}
{{catch/footer|cave}}
|}

===[[Generation III]]===
{| width="30%" class="expandable"
| 
====1F====
|-
|
{{catch/header|cave|no}}
{{catch/entryfl|047|Parasect|yes|yes|Cave|49-58|25%|type1=Bug|type2=Grass}}
{{catch/entryfl|082|Magneton|yes|yes|Cave|49|20%|type1=Electric|type2=Steel}}
{{catch/entryfl|042|Golbat|yes|yes|Cave|46-55|14%|type1=Poison|type2=Flying}}
{{catch/entryfl|057|Primeape|yes|yes|Cave|52-61|11%|type1=Fighting}}
{{catch/entryfl|132|Ditto|yes|yes|Cave|52-61|11%|type1=Normal}}
{{catch/entryfl|067|Machoke|yes|yes|Cave|46|10%|type1=Fighting}}
{{catch/entryfl|101|Electrode|yes|yes|Cave|58|5%|type1=Electric}}
{{catch/entryfl|202|Wobbuffet|yes|yes|Cave|55|4%|type1=Psychic}}
{{catch/entryfl|074|Geodude|yes|yes|Rock Smash|30-50|65%|type1=Rock|type2=Ground}}
{{catch/entryfl|075|Graveler|yes|yes|Rock Smash|40-55|35%|type1=Rock|type2=Ground}}
{{catch/div|water|Fish}}
{{catch/entryfl|054|Psyduck|yes|no|Surf|30-50|65%|type1=Water}}
{{catch/entryfl|079|Slowpoke|no|yes|Surf|30-50|65%|type1=Water|type2=Psychic}}
{{catch/entryfl|055|Golduck|yes|no|Surf|40-55|35%|type1=Water}}
{{catch/entryfl|080|Slowbro|no|yes|Surf|40-55|35%|type1=Water|type2=Psychic}}
{{catch/entryfl|129|Magikarp|yes|yes|Fish Old|5|100%|type1=Water}}
{{catch/entryfl|060|Poliwag|yes|yes|Fish Good|5-15|60%|type1=Water}}
{{catch/entryfl|118|Goldeen|yes|yes|Fish Good|5-15|20%|type1=Water}}
{{catch/entryfl|129|Magikarp|yes|yes|Fish Good|5-15|20%|type1=Water}}
{{catch/entryfl|060|Poliwag|yes|yes|Fish Super|15-25|40%|type1=Water}}
{{catch/entryfl|061|Poliwhirl|yes|yes|Fish Super|20-30|40%|type1=Water}}
{{catch/entryfl|130|Gyarados|yes|yes|Fish Super|15-25|15%|type1=Water|type2=Flying}}
{{catch/entryfl|054|Psyduck|yes|no|Fish Super|15-35|5%|type1=Water}}
{{catch/entryfl|079|Slowpoke|no|yes|Fish Super|15-35|5%|type1=Water|type2=Psychic}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
| 
====2F====
|-
|
{{catch/header|cave|no}}
{{catch/entryfl|042|Golbat|yes|yes|Cave|49-58|25%|type1=Poison|type2=Flying}}
{{catch/entryfl|067|Machoke|yes|yes|Cave|49|20%|type1=Fighting}}
{{catch/entryfl|047|Parasect|yes|yes|Cave|52-61|14%|type1=Bug|type2=Grass}}
{{catch/entryfl|064|Kadabra|yes|yes|Cave|55-64|11%|type1=Psychic}}
{{catch/entryfl|132|Ditto|yes|yes|Cave|55-64|11%|type1=Normal}}
{{catch/entryfl|082|Magneton|yes|yes|Cave|52|10%|type1=Electric|type2=Steel}}
{{catch/entryfl|202|Wobbuffet|yes|yes|Cave|58|5%|type1=Psychic}}
{{catch/entryfl|101|Electrode|yes|yes|Cave|61|4%|type1=Electric}}
{{catch/entryfl|074|Geodude|yes|yes|Rock Smash|30-50|65%|type1=Rock|type2=Ground}}
{{catch/entryfl|075|Graveler|yes|yes|Rock Smash|40-55|35%|type1=Rock|type2=Ground}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
| 
====B1F====
|-
|
{{catch/header|cave|no}}
{{catch/entryfl|064|Kadabra|yes|yes|Cave|58-67|25%|type1=Psychic}}
{{catch/entryfl|132|Ditto|yes|yes|Cave|58-67|25%|type1=Normal}}
{{catch/entryfl|047|Parasect|yes|yes|Cave|55-64|14%|type1=Bug|type2=Grass}}
{{catch/entryfl|042|Golbat|yes|yes|Cave|52-61|11%|type1=Poison|type2=Flying}}
{{catch/entryfl|067|Machoke|yes|yes|Cave|52|10%|type1=Fighting}}
{{catch/entryfl|082|Magneton|yes|yes|Cave|55|10%|type1=Electric|type2=Steel}}
{{catch/entryfl|101|Electrode|yes|yes|Cave|64|4%|type1=Electric}}
{{catch/entryfl|202|Wobbuffet|yes|yes|Cave|61|1%|type1=Psychic}}
{{catch/entryfl|074|Geodude|yes|yes|Rock Smash|30-50|65%|type1=Rock|type2=Ground}}
{{catch/entryfl|075|Graveler|yes|yes|Rock Smash|40-55|35%|type1=Rock|type2=Ground}}
{{catch/div|water|Fish}}
{{catch/entryfl|054|Psyduck|yes|no|Surf|30-50|65%|type1=Water}}
{{catch/entryfl|079|Slowpoke|no|yes|Surf|30-50|65%|type1=Water|type2=Psychic}}
{{catch/entryfl|055|Golduck|yes|no|Surf|40-55|35%|type1=Water}}
{{catch/entryfl|080|Slowbro|no|yes|Surf|40-55|35%|type1=Water|type2=Psychic}}
{{catch/entryfl|129|Magikarp|yes|yes|Fish Old|5|100%|type1=Water}}
{{catch/entryfl|060|Poliwag|yes|yes|Fish Good|5-15|60%|type1=Water}}
{{catch/entryfl|118|Goldeen|yes|yes|Fish Good|5-15|20%|type1=Water}}
{{catch/entryfl|129|Magikarp|yes|yes|Fish Good|5-15|20%|type1=Water}}
{{catch/entryfl|060|Poliwag|yes|yes|Fish Super|15-25|40%|type1=Water}}
{{catch/entryfl|061|Poliwhirl|yes|yes|Fish Super|20-30|40%|type1=Water}}
{{catch/entryfl|130|Gyarados|yes|yes|Fish Super|15-25|15%|type1=Water|type2=Flying}}
{{catch/entryfl|054|Psyduck|yes|no|Fish Super|15-35|5%|type1=Water}}
{{catch/entryfl|079|Slowpoke|no|yes|Fish Super|15-35|5%|type1=Water|type2=Psychic}}
{{catch/div|cave|Special}}
{{catch/entryfl|150|Mewtwo|yes|yes|Special|70|One|type1=Psychic}}
{{catch/footer|cave}}
|}

===[[Generation IV]]===
{| width="30%" class="expandable"
| 
====1F====
|-
|
{{catch/header|cave|yes}}
{{catch/entryhs|101|Electrode|yes|yes|Cave|40|all=5%|type1=Electric}}
{{catch/entryhs|202|Wobbuffet|yes|yes|Cave|37|all=5%|type1=Psychic}}
{{catch/entryhs|067|Machoke|yes|yes|Cave|39-40|24%|24%|6%|type1=Fighting}}
{{catch/entryhs|047|Parasect|yes|yes|Cave|38|20%|20%|10%|type1=Bug|type2=Grass}}
{{catch/entryhs|057|Primeape|yes|no|Cave|38-39|14%|14%|0%|type1=Fighting}}
{{catch/entryhs|057|Primeape|yes|no|Cave|39|0%|0%|4%|type1=Fighting}}
{{catch/entryhs|053|Persian|no|yes|Cave|38-39|14%|14%|0%|type1=Normal}}
{{catch/entryhs|053|Persian|no|yes|Cave|39|0%|0%|4%|type1=Normal}}
{{catch/entryhs|082|Magneton|yes|yes|Cave|40|11%|11%|10%|type1=Electric|type2=Steel}}
{{catch/entryhs|132|Ditto|yes|yes|Cave|39|11%|11%|10%|type1=Normal}}
{{catch/entryhs|042|Golbat|yes|yes|Cave|38|10%|10%|0%|type1=Poison|type2=Flying}}
{{catch/entryhs|042|Golbat|yes|yes|Cave|38-39|0%|0%|50%|type1=Poison|type2=Flying}}
{{catch/div|water|Fish}}
{{catch/entryhs|054|Psyduck|yes|yes|Surf|35-40|all=90%|type1=Water}}
{{catch/entryhs|055|Golduck|yes|yes|Surf|40|all=10%|type1=Water}}
{{catch/entryhs|129|Magikarp|yes|yes|Fish Old|10|all=100%|type1=Water}}
{{catch/entryhs|060|Poliwag|yes|yes|Fish Good|20|all=62%|type1=Water}}
{{catch/entryhs|118|Goldeen|yes|yes|Fish Good|20|all=33%|type1=Water}}
{{catch/entryhs|129|Magikarp|yes|yes|Fish Good|20|all=5%|type1=Water}}
{{catch/entryhs|060|Poliwag|yes|yes|Fish Super|40|all=60%|type1=Water}}
{{catch/entryhs|061|Poliwhirl|yes|yes|Fish Super|40|all=30%|type1=Water}}
{{catch/entryhs|130|Gyarados|yes|yes|Fish Super|40|all=10%|type1=Water|type2=Flying}}
{{catch/div|cave|Special}}
{{catch/entryhs|296|Makuhita|yes|yes|Hoenn|39-40|all=20%|type1=Fighting}}
{{catch/entryhs|359|Absol|yes|yes|Hoenn|38|all=20%|type1=Dark}}
{{catch/entryhs|433|Chingling|yes|yes|Sinnoh|39-40|all=20%|type1=Psychic}}
{{catch/entryhs|436|Bronzor|yes|yes|Sinnoh|38|all=20%|type1=Steel|type2=Psychic}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
|

====2F====
|-
|
{{catch/header|cave|yes}}
{{catch/entryhs|047|Parasect|yes|yes|Cave|40|all=20%|type1=Bug|type2=Grass}}
{{catch/entryhs|064|Kadabra|yes|yes|Cave|42|all=20%|type1=Psychic}}
{{catch/entryhs|082|Magneton|yes|yes|Cave|41|all=10%|type1=Electric|type2=Steel}}
{{catch/entryhs|132|Ditto|yes|yes|Cave|42|all=10%|type1=Normal}}
{{catch/entryhs|101|Electrode|yes|yes|Cave|41|all=5%|type1=Electric}}
{{catch/entryhs|202|Wobbuffet|yes|yes|Cave|42|all=5%|type1=Psychic}}
{{catch/entryhs|067|Machoke|yes|yes|Cave|39-42|20%|20%|0%|type1=Fighting}}
{{catch/entryhs|067|Machoke|yes|yes|Cave|39|0%|0%|10%|type1=Fighting}}
{{catch/entryhs|042|Golbat|yes|yes|Cave|41|10%|10%|0%|type1=Poison|type2=Flying}}
{{catch/entryhs|042|Golbat|yes|yes|Cave|41-42|0%|0%|20%|type1=Poison|type2=Flying}}
{{catch/div|cave|Special}}
{{catch/entryhs|296|Makuhita|yes|yes|Hoenn|41-42|all=20%|type1=Fighting}}
{{catch/entryhs|359|Absol|yes|yes|Hoenn|39-41|all=20%|type1=Dark}}
{{catch/entryhs|433|Chingling|yes|yes|Sinnoh|41-42|all=20%|type1=Psychic}}
{{catch/entryhs|436|Bronzor|yes|yes|Sinnoh|39-41|all=20%|type1=Steel|type2=Psychic}}
{{catch/footer|cave}}
|}

{| width="30%" class="expandable"
| 
====B1F====
|-
|
{{catch/header|cave|yes}}
{{catch/entryhs|047|Parasect|yes|yes|Cave|45-47|all=25%|type1=Bug|type2=Grass}}
{{catch/entryhs|064|Kadabra|yes|yes|Cave|46|all=20%|type1=Psychic}}
{{catch/entryhs|082|Magneton|yes|yes|Cave|45-47|all=15%|type1=Electric|type2=Steel}}
{{catch/entryhs|042|Golbat|yes|yes|Cave|47|all=10%|type1=Poison|type2=Flying}}
{{catch/entryhs|067|Machoke|yes|yes|Cave|45|all=10%|type1=Fighting}}
{{catch/entryhs|132|Ditto|yes|yes|Cave|45|all=10%|type1=Normal}}
{{catch/entryhs|101|Electrode|yes|yes|Cave|46|all=5%|type1=Electric}}
{{catch/entryhs|202|Wobbuffet|yes|yes|Cave|49|all=5%|type1=Psychic}}
{{catch/div|water|Fish}}
{{catch/entryhs|054|Psyduck|yes|yes|Surf|35-40|all=90%|type1=Water}}
{{catch/entryhs|055|Golduck|yes|yes|Surf|40|all=10%|type1=Water}}
{{catch/entryhs|129|Magikarp|yes|yes|Fish Old|10|all=100%|type1=Water}}
{{catch/entryhs|060|Poliwag|yes|yes|Fish Good|20|all=62%|type1=Water}}
{{catch/entryhs|118|Goldeen|yes|yes|Fish Good|20|all=33%|type1=Water}}
{{catch/entryhs|129|Magikarp|yes|yes|Fish Good|20|all=5%|type1=Water}}
{{catch/entryhs|060|Poliwag|yes|yes|Fish Super|40|all=60%|type1=Water}}
{{catch/entryhs|061|Poliwhirl|yes|yes|Fish Super|40|all=30%|type1=Water}}
{{catch/entryhs|130|Gyarados|yes|yes|Fish Super|40|all=10%|type1=Water|type2=Flying}}
{{catch/div|cave|Special}}
{{catch/entryhs|150|Mewtwo|yes|yes|Special|70|all=One|type1=Psychic}}
{{catch/entryhs|296|Makuhita|yes|yes|Hoenn|45|all=20%|type1=Fighting}}
{{catch/entryhs|359|Absol|yes|yes|Hoenn|45-47|all=20%|type1=Dark}}
{{catch/entryhs|433|Chingling|yes|yes|Sinnoh|45|all=20%|type1=Psychic}}
{{catch/entryhs|436|Bronzor|yes|yes|Sinnoh|45-47|all=20%|type1=Steel|type2=Psychic}}
{{catch/footer|cave}}
|}

==Layout==
The layout of the cave has been tweaked several times in the past, particularly in [[Generation I]]; however, the layout depicted in {{2v2|FireRed|LeafGreen}} looks almost exactly like the design in the Japanese versions of {{2v2|Red|Green}}, but with improved graphics.  

{| align="center" style="background: #000; -moz-border-radius: 10px; border: 5px solid #{{Locationcolor/med|cave}}"
|-
! style="background:#{{Locationcolor/light|cave}}; -moz-border-radius-topleft: 5px;" | Version
! style="background:#{{Locationcolor/light|cave}}" | 1st floor
! style="background:#{{Locationcolor/light|cave}}" | 2nd floor
! style="background:#{{Locationcolor/light|cave}}; -moz-border-radius-topright: 5px;" | Basement
|- style="background:#000"
!  style="background:#{{red color}}" | {{color2|000|Pokémon Red and Green Versions|Red}}
| rowspan="2" | [[File:Unknown Dungeon Green F1.png|180px]]
| rowspan="2" | [[File:Unknown Dungeon Green F2.png|180px]]
| rowspan="2" | [[File:Unknown Dungeon Green B1.png|180px]]
|-
!  style="background:#{{green color}}" | {{color2|000|Pokémon Red and Green Versions|Green}}
|-
!  style="background:#{{red color}}" | {{color2|000|Pokémon Red and Blue Versions|Red}}
| rowspan="2" | [[File:UnknownDungeon_-_Blue_Version_1.gif|180px]]
| rowspan="2" | [[File:UnknownDungeon_-_Blue_Version_2.gif|180px]]
| rowspan="2" | [[File:UnknownDungeon_-_Blue_Version_3.gif|180px]]
|-
!  style="background:#{{blue color}}" | {{color2|000|Pokémon Red and Blue Versions|Blue}}
|-
!  style="background:#{{yellow color}}" | {{color2|000|Pokémon Yellow Version|Yellow}}
| rowspan="1" | [[File:UnknownDungeon_-_Yellow_Version_1.gif|180px]]
| rowspan="1" | [[File:UnknownDungeon_-_Yellow_Version_2.gif|180px]]
| rowspan="1" | [[File:UnknownDungeon_-_Yellow_Version_3.gif|180px]]
|-
!  style="background:#{{firered color}}" | {{color2|000|Pokémon FireRed and LeafGreen Versions|FireRed}}
| rowspan="2" | [[File:Pokemon-FL-CeruleanCave-1F.png|180px]]
| rowspan="2" | [[File:Pokemon-FL-CeruleanCave-2F.png|180px]]
| rowspan="2" | [[File:Pokemon-FL-CeruleanCave-B1F.png|180px]]
|-
!  style="background:#{{leafgreen color}}" | {{color2|000|Pokémon FireRed and LeafGreen Versions|LeafGreen}}
|-
!  style="background:#{{heartgold  color}}" | {{color2|000|Pokémon HeartGold and SoulSilver Versions|HeartGold}}
| rowspan="2" | [[File:HGSSCeruleanCave1f.png|180px]]
| rowspan="2" | [[File:HGSSCeruleanCave2f.png|180px]]
| rowspan="2" | [[File:HGSSCeruleanCaveb1f.png|180px]]
|-
!  style="background:#{{soulsilver color}}" | {{color2|000|Pokémon HeartGold and SoulSilver Versions|SoulSilver}}
|-

| colspan="4" style="background:#{{Locationcolor/light|cave}}; -moz-border-radius-bottomleft: 5px; -moz-border-radius-bottomright: 5px;" | &nbsp; 
|}

==Eyecatch==
<gallery>
File:HGSS Cerulean Cave-Morning.png|HGSS Morning (Ditto)
File:HGSS Cerulean Cave-Day.png|HGSS Day/Evening (Paras)
File:HGSS Cerulean Cave-Night.png|HGSS Night (Magneton)
File:FL Cerulean Cave.png|FRLG
</gallery>

==Trivia==
* In [[Generation I]], the Unknown Dungeon is not listed as a [[Pokédex]] area. Therefore, any Pokémon that can only be found in the Unknown Dungeon is listed as "area unknown" in the Pokédex; however, this was fixed in [[Generation III]]. Whether this was intended, forgotten, or just a glitch is unknown.
* Though its design varies with each iteration, the version of it found in {{game|FireRed and LeafGreen|s}} is very heavily similar to the one in the original {{game|Red and Green|s}}, which was never released outside of Japan. The only difference is the Generation III addition of {{m|Rock Smash}} boulders.

==In other languages==
* '''Spanish:''' ''Mazmorra Rara'' ([[Generation I]]) and ''Cueva Celeste'' ([[Generation II]], [[Generation III|III]], [[Generation IV|IV]])
* '''Italian:''' ''Grotta Ignota'' (Generation I) and ''Grotta Celeste'' (Generation II, III, IV)
* '''German:''' ''Geheimdungeon'' (Generation I) and ''Azuria-Höhle'' (Generation II, III, IV)
* '''French:''' ''Grotte Inconnue'' (Generation I) and ''Grotte Azurée'' (Generation II, III, IV)

==References==
*[http://www.psypokes.com/dex/index.php Psypoke Psydex] - Pokémon catch rates

{{Kanto}}
{{legendarylocations|kanto}}<br>
{{Project Locations notice}}

[[Category:Kanto locations]]
[[Category:Red, Blue and Yellow locations]]
[[Category:FireRed and LeafGreen locations]]
[[Category:HeartGold and SoulSilver locations]]
[[Category:Caves]]

[[de:Azuria-Höhle]]
[[fr:Caverne Azurée]]
[[ja:ハナダのどうくつ]]
[[pt:Cerulean Cave]]