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Mt. Mortar Crystal · Johto landmark

Map of Mt. Mortar in Pokémon Crystal
Entrance (in-game map)

Mt. Mortar is the large cave system on Route 42 between Ecruteak City and Mahogany Town, with three entrances on the route. Its waterfalls, boulders and underground lakes need several HMs, and deep inside Karate King Kiyo trains in seclusion, giving a Tyrogue to anyone who beats him.

Wild Pokémon
12
Items
24
Trainers
4
Needs
Surf, Strength, Waterfall

Connects to: Route 42

Where Mt. Mortar is on the Johto mapMt. Mortar on the Johto map

Gift and special Pokémon

Tyrogue Lv. 10 · Gift

Karate King Kiyo gives you Tyrogue after you beat him deep in the cave.

Wild Pokémon

1F (outer cave)

Walking in the cave encounter rate 6%
PokémonTypeLv.MorningDayNight
RattataNormal1430%30%30%
ZubatPoisonFlying1330%30%30%
MachopFighting1420%20%–
MarillWater14––20%
GolbatPoisonFlying1310%10%10%
RaticateNormal165%5%5%
GeodudeRockGround145%5%5%
Surfing encounter rate 4%
PokémonTypeLv.Chance
GoldeenWater1560%
MarillWater2030%
SeakingWater2010%
Fishing
RodPokémonLv.Morning & dayNight
Old RodMagikarp1085%85%
Goldeen1015%15%
Good RodGoldeen2065%65%
Magikarp2035%35%
Super RodGoldeen4070%70%
Magikarp4020%20%
Seaking4010%10%

1F (inner cave)

Walking in the cave encounter rate 6%
PokémonTypeLv.MorningDayNight
RattataNormal1430%30%30%
GeodudeRockGround1330%30%30%
RaticateNormal14–1510%10%20%
MachopFighting1520%20%–
ZubatPoisonFlying14–155%5%10%
GolbatPoisonFlying155%5%5%
MarillWater15––5%

2F

Walking in the cave encounter rate 6%
PokémonTypeLv.MorningDayNight
MachokeFighting3230%30%–
GeodudeRockGround3120%20%30%
GravelerRockGround3130%30%30%
RaticateNormal3010%10%20%
GolbatPoisonFlying30–325%5%15%
MachopFighting285%5%–
MarillWater28––5%
Surfing encounter rate 2%
PokémonTypeLv.Chance
GoldeenWater2060%
MarillWater2530%
SeakingWater2510%
Fishing
RodPokémonLv.Morning & dayNight
Old RodMagikarp1085%85%
Goldeen1015%15%
Good RodGoldeen2065%65%
Magikarp2035%35%
Super RodGoldeen4070%70%
Magikarp4020%20%
Seaking4010%10%

B1F

Walking in the cave encounter rate 6%
PokémonTypeLv.MorningDayNight
ZubatPoisonFlying15–1760%60%60%
GolbatPoisonFlying1720%20%20%
MachopFighting1610%10%–
MarillWater16––10%
RaticateNormal185%5%5%
GeodudeRockGround165%5%5%
Surfing encounter rate 2%
PokémonTypeLv.Chance
GoldeenWater1560%
MarillWater2030%
SeakingWater2010%
Fishing
RodPokémonLv.Morning & dayNight
Old RodMagikarp1085%85%
Goldeen1015%15%
Good RodGoldeen2065%65%
Magikarp2035%35%
Super RodGoldeen4070%70%
Magikarp4020%20%
Seaking4010%10%

Chances are the game’s encounter slots for each time of day: morning 4:00–9:59, day 10:00–17:59, night 18:00–3:59 (grass and caves 30/30/20/10/5/4/1, surfing 60/30/10). Where to find every Pokémon · Crystal vs Gold & Silver.

Trainers

Karate King Kiyo

Karate King Kiyo Deep in Mt. Mortar

HitmonleeHitmonlee 34HitmonchanHitmonchan 34

Prize ₽204

TrainerPokémonPrizeWhere
PokéManiacMillerNidokingNidoking 17NidoqueenNidoqueen 17₽2551F (inner cave)
Super NerdMarkusSlowpokeSlowpoke 19₽1521F (inner cave)
Super NerdHughSeadraSeadra 39₽3122F

Prize money is the trainer class’s base payout times the level of the trainer’s last Pokémon. Trainers with phone rematches call you when they want another battle; their teams grow as you progress.

Items

ItemHowWhere
EtherItem ball1F (outer cave)
ReviveItem ball1F (outer cave)
Hyper PotionHidden1F (outer cave)
Escape RopeItem ball1F (inner cave)
Max ReviveItem ball1F (inner cave)
Hyper PotionItem ball1F (inner cave)
Max PotionItem ball1F (inner cave)
NuggetItem ball1F (inner cave)
IronItem ball1F (inner cave)
Ultra BallItem ball1F (inner cave)
Max RepelHidden1F (inner cave)
Max PotionItem ball2F
Rare CandyItem ball2F
TM40 Defense CurlItem ball2F
Dragon ScaleItem ball2F
ElixerItem ball2F
Escape RopeItem ball2F
Full RestoreHidden2F
Hyper PotionItem ballB1F
CarbosItem ballB1F
Full RestoreItem ballB1F
Max EtherItem ballB1F
PP UpItem ballB1F
Max ReviveHiddenB1F

Hidden items can be found with the Itemfinder from Ecruteak City.

Tips

  • Beat Karate King Kiyo (Hitmonlee and Hitmonchan, both Lv34) on B1F and he gives you a Lv10 Tyrogue.
  • A Dragon Scale lies on 2F, along with a Rare Candy and TM40 Defense Curl.
  • 2F is the strongest floor: Machoke (Lv32) appears in the morning and day, and Graveler (Lv31) at any time.
  • Marill walks the caves only at night (20% on the outer 1F) but is 30% of surfing encounters there at any time, while Machop is a morning and day find.
  • Super Nerd Hugh’s Lv39 Seadra on 2F hits far harder than anything else in the cave.

Walkthrough: Part 8: Route 42, Mahogany Town and the Lake of Rage

More maps

Mt. Mortar: Inner cave
Inner cave
Mt. Mortar: 2F
2F
Mt. Mortar: B1F
B1F

FAQ

How do you get Tyrogue in Pokémon Crystal?

Defeat Karate King Kiyo on Mt. Mortar B1F; he gives you a Lv10 Tyrogue afterwards.

Where is the Dragon Scale in Pokémon Crystal?

On Mt. Mortar 2F, which needs Surf and Waterfall to reach.

Which HMs do you need for Mt. Mortar?

Surf, Strength and Waterfall to reach every floor and Kiyo.

What Pokémon can you catch in Mt. Mortar in Pokémon Crystal?

12 species: Rattata, Zubat, Machop, Marill, Golbat, Raticate, Geodude, Goldeen, Seaking, Magikarp, Machoke, Graveler.

Sources & picture credits

Guide text is original retrogameindex writing, checked against the game’s own scripts and Bulbapedia. Wild Pokémon and encounter chances for all three times of day, fishing, Headbutt and Rock Smash tables, items, trainers, gifts, trades and shops come from the pret/pokecrystal decompilation (pret/pokecrystal 3bc8daa417). Maps, sprites and the Johto and Kanto Pokégear maps are drawn by retrogameindex from the game’s own graphics in that decompilation (listed on the image gallery). Pokémon © Nintendo / Creatures / GAME FREAK.