Do all of Crystal's caves still need Flash?

Mt. Mortar is the big change. Its halls were dark in Gold and Silver, but Crystal brightened them, so Flash is no longer needed to get through. Two caves still go pitch black, Dark Cave and Kanto's Rock Tunnel, and the move only works outdoors once you hold the Zephyr Badge.

Crystal Rock Tunnel

Flash is a must in this pitch-black cave east of Lavender, where Kangaskhan and Marowak roam the dark beside lost, lonely Cubone.

Rock Tunnel is in Kanto. In the story you arrive from Route 10 to the south and continue west to Route 9.

ROCK TUNNEL MAP

Rock Tunnel is unlit from end to end, two floors where Flash is all but required to thread Route 10 through to the far side. Mt. Mortar got its lights in Crystal, but this cave never did.

Pokemon Encounters

Rock Tunnel is a pitch-dark warren of Geodude, Cubone, and Onix. Kangaskhan and Marowak each appear at a rare 5 percent by day, with Haunter loose after dark.

Type

▾1F9

Walking9

#074Geodude

50% - Lv 11–12

#041Zubat

40% - Lv 12–15

#104Cubone

30% - Lv 10

#074Geodude

30% - Lv 11

#066Machop

20% - Lv 12

#093Haunter

10% - Lv 17

#041Zubat

10% - Lv 12

#067Machoke

5% - Lv 15

#105Marowak

5% - Lv 12

▾B1F9

Walking9

#041Zubat

40% - Lv 12–15

#104Cubone

30% - Lv 12

#074Geodude

30% - Lv 14

#095Onix

20% - Lv 16

#041Zubat

10% - Lv 12

#042Golbat

5% - Lv 15

#093Haunter

5% - Lv 15

#115Kangaskhan

5% - Lv 15

#105Marowak

5% - Lv 15

#074

Geodude

RockGround

Evolves into Graveler at Lv 25

Encounter rate

50% Common

Level

11–12

EV yield

1 Defense

1 in 2wild encounters

will be Geodude — about 54s of walking through grass to catch one.

Catch odds

~2m

to catch one

Poke Ball34%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected81h 55m

Also found in 8 other locations

Dark CaveLv 2–23

60%Route 46Lv 2–3

50%Mt. MoonLv 8–10

35%Mt. MortarLv 13–31

30%Route 45Lv 23–23

30%Union CaveLv 6–20

30%Route 33Lv 6–6

20%Team Rocket HQLv 21–21

Geodude page →

#041

Zubat

PoisonFlying

Evolves into Golbat at Lv 22

Encounter rate

40% Common

Level

12–15

EV yield

1 Speed

1 in 3wild encounters

will be Zubat — about 1m of walking through grass to catch one.

Catch odds

~3m

to catch one

Poke Ball34%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected102h 24m

Also found in 18 other locations

Slowpoke WellLv 5–23

85%Mt. MortarLv 13–17

30%Tohjo FallsLv 22–22

30%Ice PathLv 22–25

30%Route 42Lv 14–14

30%Whirl IslandsLv 23–26

30%Route 4Lv 6–6

10%Route 3Lv 6–6

10%Burned TowerLv 14–15

1 in 3wild encounters

will be Zubat — about 1m of walking through grass to catch one.

Zubat page →

#104

Cubone

Ground

Evolves into Marowak at Lv 28

Encounter rate

30% Common

Level

EV yield

1 Defense

1 in 3wild encounters

will be Cubone — about 1m of walking through grass to catch one.

Catch odds

~4m-5m

to catch one

Poke Ball25%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected136h 32m

Also found in 1 other location

Goldenrod CityLv 15–15

Cubone page →

#074

Geodude

RockGround

Evolves into Graveler at Lv 25

Encounter rate

30% Common

Level

EV yield

1 Defense

1 in 3wild encounters

will be Geodude — about 1m of walking through grass to catch one.

Catch odds

~4m

to catch one

Poke Ball34%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected136h 32m

Geodude page →

#104

Cubone

Ground

Evolves into Marowak at Lv 28

Encounter rate

30% Common

Level

EV yield

1 Defense

1 in 3wild encounters

will be Cubone — about 1m of walking through grass to catch one.

Cubone page →

#074

Geodude

RockGround

Evolves into Graveler at Lv 25

Encounter rate

30% Common

Level

EV yield

1 Defense

1 in 3wild encounters

will be Geodude — about 1m of walking through grass to catch one.

Geodude page →

#066

Machop

Fighting

Evolves into Machoke at Lv 28

Encounter rate

20% Uncommon

Level

EV yield

1 Attack

1 in 5wild encounters

will be Machop — about 2m of walking through grass to catch one.

Catch odds

~5m-6m

to catch one

Poke Ball24%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score20

PickLottery

SourceEstimated

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected204h 48m

Also found in 2 other locations

Mt. MortarLv 14–28

20%Goldenrod CityLv ?–?

Machop page →

#095

Onix

RockGround

Evolves into Steelix via trade

Encounter rate

20% Uncommon

Level

EV yield

1 Defense

1 in 5wild encounters

will be Onix — about 2m of walking through grass to catch one.

Catch odds

~13m-25m

to catch one

Poke Ball6%

Great Ball9%

Ultra Ball12%

Nuzlocke

community tier

Score20

PickLottery

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected204h 48m

Also found in 4 other locations

Mt. SilverLv 42–48

30%Victory RoadLv 32–33

20%Union CaveLv 6–23

10%Violet CityLv ?–?

Onix page →

#093

Haunter

GhostPoison

Evolves into Gengar via trade

Encounter rate

10% Rare

Level

EV yield

2 Sp. Atk

1 in 10wild encounters

will be Haunter — about 7m of walking through grass to catch one.

Catch odds

~13m-25m

to catch one

Poke Ball12%

Great Ball18%

Ultra Ball24%

Nuzlocke

community tier

Score60

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected409h 36m

Also found in 1 other location

Route 8Lv 17–17

10%

Haunter page →

#041

Zubat

PoisonFlying

Evolves into Golbat at Lv 22

Encounter rate

10% Rare

Level

EV yield

1 Speed

1 in 10wild encounters

will be Zubat — about 7m of walking through grass to catch one.

Catch odds

~9m

to catch one

Poke Ball34%

Great Ball34%

Ultra Ball34%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected409h 36m

Zubat page →

1 in 10wild encounters

will be Zubat — about 7m of walking through grass to catch one.

Zubat page →

#067

Machoke

Fighting

Evolves into Machamp via trade

Encounter rate

5% V.Rare

Level

EV yield

2 Attack

+10

1 in 20wild encounters

will be Machoke — about 20m of walking through grass to catch one.

Catch odds

~25m-50m

to catch one

Poke Ball12%

Great Ball18%

Ultra Ball24%

Nuzlocke

community tier

Score40

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected819h 12m

Also found in 2 other locations

Mt. MortarLv 32–32

30%Mt. SilverLv 48–48

30%

Machoke page →

#105

Marowak

Ground

Encounter rate

5% V.Rare

Level

EV yield

2 Defense

+10

1 in 20wild encounters

will be Marowak — about 20m of walking through grass to catch one.

Catch odds

~30m-1h

to catch one

Poke Ball10%

Great Ball15%

Ultra Ball20%

Nuzlocke

community tier

Score60

PickRisky

SourceEstimated

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected819h 12m

Also found in 2 other locations

Route 10Lv 15–15

5%Route 9Lv 18–18

Marowak page →

#042

Golbat

PoisonFlying

Evolves into Crobat via friendship

Encounter rate

5% V.Rare

Level

EV yield

2 Speed

+10

1 in 20wild encounters

will be Golbat — about 20m of walking through grass to catch one.

Also found in 11 other locations

Mt. SilverLv 40–53

80%Route 28Lv 40–42

30%Victory RoadLv 34–34

30%Ice PathLv 22–26

30%Union CaveLv 22–22

30%Tohjo FallsLv 24–24

20%Mt. MortarLv 13–32

20%Route 42Lv 16–16

15%Whirl IslandsLv 24–28

10%Dark CaveLv 23–23

5%Slowpoke WellLv 23–23

Golbat page →

#093

Haunter

GhostPoison

Evolves into Gengar via trade

Encounter rate

5% V.Rare

Level

EV yield

2 Sp. Atk

+10

1 in 20wild encounters

will be Haunter — about 20m of walking through grass to catch one.

Catch odds

~25m-50m

to catch one

Poke Ball12%

Great Ball18%

Ultra Ball24%

Nuzlocke

community tier

Score60

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected819h 12m

Haunter page →

#115

Kangaskhan

Normal

Encounter rate

5% V.Rare

Level

EV yield

2 HP

+10

1 in 20wild encounters

will be Kangaskhan — about 20m of walking through grass to catch one.

Catch odds

~50m-1h 40m

to catch one

Poke Ball6%

Great Ball9%

Ultra Ball12%

Nuzlocke

community tier

Score60

PickRisky

SourceDerived

Shiny hunt

1/8,192

full odds

Base1/8,192

Expected819h 12m

Kangaskhan only spawns wild here in this region. Catch one while you can.

Kangaskhan page →

#105

Marowak

Ground

Encounter rate

5% V.Rare

Level

EV yield

2 Defense

+10

1 in 20wild encounters

will be Marowak — about 20m of walking through grass to catch one.

Marowak page →

ITEMS

Rock Tunnel pays out the dark crawl with TM47 Steel Wing and a couple of vitamins, a PP Up and an Iron among them. A Max Potion sits deeper in.

TM1

TM47 Steel Wing

Vitamin2

Iron

B1F

PP Up

B1F

Item ball2

Elixir

Revive

B1F

Hidden3

X Accuracy

X Defense

Max Potion

B1F

TM47 Steel Wing

Found on 1F · center platform

Move

Steel WingSteelPhysical

Power

Accuracy

90%

Steel Wing deals damage and has a 10% chance of raising the user's Defense by one stage.

VITAMIN

Iron

Found on B1F · south

Effect

Raises DEFENSE of one Pokemon.

VITAMIN

PP Up

Found on B1F · west

Effect

Raises max PP of a selected move.

ITEM BALL

Elixir

Found on 1F · southwest

Effect

Restores PP of all moves by 10.

ITEM BALL

Revive

Found on B1F · north

Effect

Restores a fainted Pokemon to 1/2 HP.

HIDDEN

X Accuracy

Found on 1F · northeast (hidden)

Effect

Raises accuracy. (1 BTL)

HIDDEN

X Defense

Found on 1F · east of TM47 (hidden)

Effect

Raises DEFENSE. (1 BTL)

HIDDEN

Max Potion

Found on B1F · northwest of PP Up (hidden)

Effect

Fully restores Pokemon HP.

TM1

TM47 Steel Wing

Found on 1F · center platform

Move

Steel WingSteelPhysical

Power

Accuracy

90%

Steel Wing deals damage and has a 10% chance of raising the user's Defense by one stage.

Vitamin2

Iron

B1F

VITAMIN

Iron

Found on B1F · south

Effect

Raises DEFENSE of one Pokemon.

PP Up

B1F

VITAMIN

PP Up

Found on B1F · west

Effect

Raises max PP of a selected move.

Item ball2

Elixir

ITEM BALL

Elixir

Found on 1F · southwest

Effect

Restores PP of all moves by 10.

Revive

B1F

ITEM BALL

Revive

Found on B1F · north

Effect

Restores a fainted Pokemon to 1/2 HP.

Hidden3

X Accuracy

HIDDEN

X Accuracy

Found on 1F · northeast (hidden)

Effect

Raises accuracy. (1 BTL)

X Defense

HIDDEN

X Defense

Found on 1F · east of TM47 (hidden)

Effect

Raises DEFENSE. (1 BTL)

Max Potion

B1F

HIDDEN

Max Potion

Found on B1F · northwest of PP Up (hidden)

Effect

Fully restores Pokemon HP.

Rock Tunnel Guide

Mt. Mortar is the big change. Its halls were dark in Gold and Silver, but Crystal brightened them, so Flash is no longer needed to get through. Two caves still go pitch black, Dark Cave and Kanto's Rock Tunnel, and the move only works outdoors once you hold the Zephyr Badge.