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Clathrite Tunnel is a frozen cave located in the Naljo region. It is split into two different sections with different entrances.

1F can be accessed from the gatehouse on Route 71, whereas the lower levels connect Naljo Ruins and Route 84, and must be accessed from there.

Eevee can evolve into Glaceon if leveled up here.

First section (1F)[]

Clathrite Tunnel
Clathrite Tunnel Exterior 2
Map description
This area is not described by a map.
Required for navigation
Surf Surf
Connecting Locations
Route 71
Clathrite Tunnel
Route 71
Location
Clathrite Tunnel Map Location
Location of Clathrite Tunnel in Naljo.

1F can be accessed from the gatehouse on Route 71, and leads to the other half of the route, though this requires HM03 (Surf). This is also required to reach the mine cart.

Guide[]

This part of the tunnel can be accessed as soon as the player reaches Route 71, while on their way from Caper City towards Oxalis City. However, without the use of HM03 (Surf), they can only pick up an item and encounter some wild Pokémon in the westernmost patch of ground.

Once Surf has been acquired, the mine cart in the lower middle of the cave can be reached and used to travel to Mound Cave, Firelight Caverns and Acqua Mines. The exit at the east of the cave can also be reached, which leads to the second half of Route 71, containing the Battle Tower and leading on to Phacelia Town.

Items[]

Item Location Image
TM09 - Hail 1F, close to the ladder leading from the Route 71 gatehouse. Clathrite Tunnel - TM09

Mining[]

Mining is possible on this floor. The special items mined here are Icy Rocks.

Pokemon[]

Pokémon Location Time Levels Rate
41
Zubat
Cave Cave Morning 5 35%
Day
Night
361-Snorunt
Snorunt
Cave Cave Morning 5 30%
Day
Night
183
Marill
Cave Cave Morning 4 20%
Day
Night
220
Swinub
Cave Cave Morning 5 10%
Day
Night
414-Bronzor
Bronzor
Cave Cave Morning 7 4%
Day
Night
215
Sneasel
Cave Cave Morning 8 1%
Day
Night
170
Chinchou
Surfing Surfing Morning 10 100%
Day
Night
A colored background means that the Pokémon can be found in this location at that time of day. A white background means that the Pokémon cannot be found at that time.


Fishing[]

No pokémon can be caught by fishing in this location.

Lower Levels (B1F and below)[]

Clathrite Tunnel
Clathrite Tunnel Exterior
Map description
This area is not described by a map.
Required for navigation
Strength Strength
Connecting Locations
Route 84
Clathrite Tunnel
Naljo Ruins
Location
Clathrite Tunnel Map Location
Location of Clathrite Tunnel in Naljo.

Reaching B1F and B2F requires entering the cave via Naljo Ruins or Route 84. In order to traverse these lower floors, the player needs the Fluffy Coat in their Pack.

On B2F is an entrance to an interior cave where Kyogre can be encountered, if the player has the Blue Orb.

Guide[]

B1F can be accessed via the lower-left exit of the Naljo Ruins outside area. However, without the Fluffy Coat the player is unable to step onto the first ice puzzle, though they can battle the wild Pokémon in a small patch of ground. Once the player has picked up the Fluffy Coat from Saxifrage Prison and obtained HM04 (Strength), they can progress further into the cave, which consists of multiple rooms with sliding floor puzzles.

The first sliding ice puzzle is in the B1F room which requires the Fluffy Coat. After this are four rooms which are technically all part of B2F, though they are connected by stairs leading up and down. These rooms are all darker in color than the B1F floors, and three of them contain further sliding ice puzzles. The fourth room instead contains a maze, and access to the Kyogre Cave. From the stairs in this room, the player returns to the brighter floor of B1F and another maze room. Solving the maze leads to Route 84.

Kyogre Cave[]

Reaching this cave (found on B2F) requires solving a Strength puzzle, by pushing a boulder onto the ice in front of it. However, until the player has the Blue Orb there is no reason to do this, as Kyogre cannot be summoned without this. The cave contains no wild Pokémon and no items.

Walkthrough[]

The images in this walkthrough show the rooms in order, as traveling from Naljo Ruins to Route 84. Staircases labeled with the same letter link to each other. White arrows show the way to solve the sliding puzzles and maze. A pokémon with Strength is required to pass through the tunnel. It is also recommended to bring plenty of Repels.

Sliding ice puzzles
B1F
ClathriteTunnelB1FWalkthrough1
B2F
ClathriteTunnelB2FWalkthrough1
ClathriteTunnelB2FWalkthrough2
White arrows show the directions to take to get from Naljo Ruins to Route 84.
Gray arrows show the directions to take to get to items.
Arrows starting at boulders show that they must be pushed while sliding.
Rock puzzle
B2F
ClathriteTunnelB2FWalkthrough3
The boulder puzzle does not need to be completed until the player has the Blue Orb.
To complete, the boulder must be pushed in the direction shown by the gray arrow, then the ice puzzle solved according to the white arrow.
To progress onwards to Route 84, simply use the staircase marked E to reach the maze room.
Maze room
B1F
ClathriteTunnelB1FWalkthrough2
Clathrite Tunnel maps, including trainers and item balls (labeled).

The boulder tunnel to access the Kyogre Cave can be solved at this time, but there is no point in doing so when the player does not have the Blue Orb.

Items[]

Item Location Image
TM70 - Dragon Claw B2F, in the top-left corner of the third ice puzzle room Clathrite Tunnel - TM70
Dragon Fang B2F, in the bottom-left corner of the fourth ice puzzle room Clathrite Tunnel - Dragon Fang
Ether B1F maze room, reached by taking the bottom-right path from the stairs leading down Clathrite Tunnel - Ether
PP Up B1F maze room, bottom-left corner, encountered on the path taken to solve the maze Clathrite Tunnel - PP Up
Icy Rock ??? [[File:]]
Gold Token B2F, in the third ice puzzle room, in a rock just above the stairs leading down Clathrite Tunnel - Gold Token

Mining[]

Mining is not possible in the lower levels.

Pokemon[]

B1F[]

Pokémon Location Time Levels Rate
215
Sneasel
Cave Cave Morning 36 40%
Day
Night
41
Zubat
Cave Cave Morning 35 30%
Day
Night
297-Hariyama
Hariyama
Cave Cave Morning 37 20%
Day
Night
433-Chingling
Chingling
Cave Cave Morning 15 5%
Day
Night
42
Golbat
Cave Cave Morning 40 4%
Day
Night
359-Absol
Absol
Cave Cave Morning 40 1%
Day
Night
A colored background means that the Pokémon can be found in this location at that time of day. A white background means that the Pokémon cannot be found at that time.


B2F[]

Pokémon Location Time Levels Rate
41
Zubat
Cave Cave Morning 34 30%
Day
Night
220
Swinub
Cave Cave Morning 32 30%
Day
Night
79
Slowpoke
Cave Cave Morning 35 20%
Day
Night
215
Sneasel
Cave Cave Morning 36 10%
Day
Night
414-Bronzor
Bronzor
Cave Cave Morning 37 5%
Day
Night
221
Piloswine
Cave Cave Morning 36 4%
Day
Night
471-Glaceon
Glaceon
Cave Cave Morning 40 1%
Day
Night
A colored background means that the Pokémon can be found in this location at that time of day. A white background means that the Pokémon cannot be found at that time.


Trainers[]

B1F[]

These trainers are found in the Maze room. If traveling from Naljo Ruins, this is the last room on B1F before reaching Route 84.

Trainer Pokémon
Boarder
Boarder Boyd
Reward: PokémonDollar3240
73 Tentacruel Lv.44
No item
362-Galie Glalie Lv.44
No item
478-Froslass Froslass Lv.45
No item
Boarder
Boarder Lloyd
Reward: PokémonDollar3312
110 Weezing Lv.44
No item
284-Masquerain Masquerain Lv.46
No item


B2F[]

Trainer Pokémon
Skier
Skier Fawn
Reward: PokémonDollar3096
350-Milotic Milotic Lv.42
No item
471-Glaceon Glaceon Lv.43
No item
Boarder
Boarder Darn
Reward: PokémonDollar3168
221 Piloswine Lv.43
No item
461-Weavile Weavile Lv.44
No item


Maps[]

1F
ClathriteTunnel1FGuide
Lower Levels
B1F B2F
ClathriteTunnelB1FGuide
ClathriteTunnelB2FGuide
Kyogre Cave
ClathriteTunnelKyogreCaveGuide
Clathrite Tunnel maps, including trainers, item balls and overworld encounters.

Naljo
Pyre Badge 2 Nature Badge 2 Charm Badge 2 Midnight Badge 2 Muscle Badge 2 Haze Badge 2 Raucous Badge 2 Naljo Badge 2
Settlements
Caper CityOxalis CitySpurge CityHeath VillageLaurel CityTorenia CityPhacelia Town
Acania DockSaxifrage IslandPhlox Town
Landmarks
Acqua MinesAlgernon LaboratoriesArcade FerryBattle TowerBattle ArcadeClathrite Tunnel
Firelight CavernsFire LighthouseGlitch CityHaunted ForestHaunted Mansion
International TunnelLaurel ForestMagikarp CavernMilos CatacombsMound CaveNaljo Border
Naljo RuinsPhlox Bingo HallProfessor Ilk's LaboratoryProvincial ParkRookie Trainer Hall
Saxifrage PrisonSpurge CasinoSpurge Orphanage
Access to
Tunod WaterwayRoute 64Route 67
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