Johto field journalPokémon HeartGold / SoulSilverGUIDES

Mt. Mortar HGSS · Johto Area

Mt. Mortar in Pokémon HeartGold and SoulSilver
Mt Mortar 1F back (HeartGold and SoulSilver)

Mt. Mortar is a huge, multi-level cave on Route 42 between Ecruteak City and Mahogany Town, with three entrances on the route. Most of it is optional, but it rewards thorough explorers with a pile of items and a meeting with the Karate King, Kiyo, who has been training deep inside. Fully exploring it takes several HMs, so it is best revisited later in the game.

Region
Johto
Wild Pokémon
12
Items
35
Trainers
4
HMs
Surf, Strength, Waterfall, Rock Climb

Connects to: Route 42

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

Gift, legendary and roaming Pokémon

Tyrogue Lv. 10 · Gift · B1F

Beat Kiyo the Black Belt deep inside Mt. Mortar (you need Surf, Strength and Waterfall to reach him) and he gives you Tyrogue.

Wild Pokémon

1F Entrance

Walking in the cave encounter rate 10
PokémonTypeLv.MorningDayNight
ZubatPoisonFlying13–1560%60%60%
MachopFighting1420%20%20%
RattataNormal14–1614%14%14%
GeodudeRockGround145%5%5%
MarillWater151%1%1%
SwarmMarill Grass · 40%, Lv. 13–15Only on a day when Professor Oak’s Pokémon Talk on the radio (or a phone call) reports a swarm here.
Hoenn SoundMakuhita 20%, Lv. 14 Absol 20%, Lv. 13–15Play the Hoenn Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Sinnoh SoundChingling 20%, Lv. 14 Bronzor 20%, Lv. 13–15Play the Sinnoh Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Surfing encounter rate 10
PokémonTypeLv.Chance
GoldeenWater10–2590%
SeakingWater15–2510%
Fishing
RodPokémonLv.Chance
Old RodMagikarp1085%
Goldeen1015%
Good RodGoldeen2060%
Magikarp2040%
Super RodGoldeen4070%
Magikarp4020%
Seaking4010%

1F Back

Walking in the cave encounter rate 10
PokémonTypeLv.MorningDayNight
GeodudeRockGround13–1550%50%50%
MachopFighting13–1535%35%35%
RattataNormal1410%10%10%
ZubatPoisonFlying145%5%5%
Hoenn SoundMakuhita 20%, Lv. 15 Absol 20%, Lv. 13Play the Hoenn Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Sinnoh SoundChingling 20%, Lv. 15 Bronzor 20%, Lv. 13Play the Sinnoh Sound radio channel (after the National Pokédex): replaces four 10% grass slots.

2F

Walking in the cave encounter rate 10
PokémonTypeLv.MorningDayNight
MachokeFighting3230%30%30%
GravelerRockGround3130%30%30%
GeodudeRockGround3120%20%20%
RaticateNormal3010%10%10%
GolbatPoisonFlying305%5%5%
MachopFighting285%5%5%
Hoenn SoundMakuhita 20%, Lv. 31 Absol 20%, Lv. 31–32Play the Hoenn Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Sinnoh SoundChingling 20%, Lv. 31 Bronzor 20%, Lv. 31–32Play the Sinnoh Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Surfing encounter rate 10
PokémonTypeLv.Chance
GoldeenWater15–3090%
SeakingWater20–3010%
Fishing
RodPokémonLv.Chance
Old RodMagikarp1085%
Goldeen1015%
Good RodGoldeen2060%
Magikarp2040%
Super RodGoldeen4070%
Magikarp4020%
Seaking4010%

B1F

Walking in the cave encounter rate 10
PokémonTypeLv.MorningDayNight
ZubatPoisonFlying15–1760%60%60%
RattataNormal1620%20%20%
MachopFighting1610%10%10%
RaticateNormal165%5%5%
GeodudeRockGround165%5%5%
Hoenn SoundMakuhita 20%, Lv. 16 Absol 20%, Lv. 15–17Play the Hoenn Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Sinnoh SoundChingling 20%, Lv. 16 Bronzor 20%, Lv. 15–17Play the Sinnoh Sound radio channel (after the National Pokédex): replaces four 10% grass slots.
Surfing encounter rate 10
PokémonTypeLv.Chance
GoldeenWater10–2590%
SeakingWater15–2510%
Fishing
RodPokémonLv.Chance
Old RodMagikarp1085%
Goldeen1015%
Good RodGoldeen2060%
Magikarp2040%
Super RodGoldeen4070%
Magikarp4020%
Seaking4010%

Chances are the game’s encounter slots: grass and caves 20/20/10/10/10/10/5/5/4/4/1/1, with every slot changing by time of day (morning 4:00–9:59, day 10:00–19:59, night 20:00–3:59); surfing 60/30/5/4/1; all three rods 40/30/15/10/5; Rock Smash 80/20; Headbutt 50/15/15/10/5/5. HG and SS mark Pokémon found in only one version. Where to find every Pokémon.

Trainers

Black Belt Kiyo

Black Belt Kiyo B1F

HitmonleeHitmonlee 34HitmonchanHitmonchan 34

Prize ₽816

TrainerPokémonPrizeWhere
Poké ManiacHarrisonNidokingNidoking 17NidoqueenNidoqueen 17₽1,0881F Back
Super NerdMarkusSlowpokeSlowpoke 19₽9121F Back
Super NerdHughSeadraSeadra 39₽1,8722F

Prize money is four times the level of the trainer’s last Pokémon times the trainer class’s rate (doubled in double battles). Trainers who give you their Pokégear number call when they want a rematch, with stronger teams as you progress.

Items

ItemHowWhere
EtherItem ball1F Entrance
ReviveItem ball1F Entrance
Hyper PotionHidden1F Entrance
ReviveHidden1F Entrance
Escape RopeItem ball1F Back
NuggetItem ball1F Back
Iron BallItem ball1F Back
Max PotionItem ball1F Back
IronItem ball1F Back
Max ReviveItem ball1F Back
Ultra BallItem ball1F Back
Full IncenseItem ball1F Back
ProtectorItem ball1F Back
Max RepelHidden1F Back
EtherHidden1F Back
Rare CandyHidden1F Back
Ultra BallHidden1F Back
NuggetHidden1F Back
Rare CandyItem ball2F
Max PotionItem ball2F
TM40 Aerial AceItem ball2F
ElixirItem ball2F
Dragon ScaleItem ball2F
Escape RopeItem ball2F
Full RestoreHidden2F
HP UpHidden2F
Hyper PotionHidden2F
Full HealHidden2F
CarbosItem ballB1F
PP UpItem ballB1F
Full RestoreItem ballB1F
Max EtherItem ballB1F
Hyper PotionItem ballB1F
Max ReviveHiddenB1F
Ultra BallHiddenB1F

Hidden items can be found with the Dowsing MCHN Pokégear app.

Tips

  • Black Belt Kiyo waits on B1F with Hitmonlee and Hitmonchan at Lv34, and after you beat him he gives you a Lv10 Tyrogue.
  • Reaching Kiyo takes Surf, Waterfall and Strength.
  • Notable items include the Dragon Scale and TM40 Aerial Ace on 2F and the Protector, which needs Rock Climb.
  • Unlike in Gold and Silver, the cave is already lit in HGSS, so you do not need Flash.
  • Marill is a 1% find near the entrance, but a Marill mass outbreak makes it common.
  • The upper floors have much stronger Pokémon, such as Lv32 Machoke and Lv31 Graveler.

Walkthrough: Part 10: Lake of Rage, Team Rocket HQ and Pryce · Part 13: The Kimono Girls and Ho-Oh or Lugia

More pictures

Mt. Mortar: Mt. Mortar entrance picture (day, from the game)
Mt. Mortar entrance picture (day, from the game)
Mt. Mortar: Mt. Mortar entrance picture (night, from the game)
Mt. Mortar entrance picture (night, from the game)

FAQ

How do you get Tyrogue in HeartGold and SoulSilver?

Find Black Belt Kiyo on B1F of Mt. Mortar and beat his Hitmonlee and Hitmonchan; he gives you a Lv10 Tyrogue.

What HMs do you need for Mt. Mortar?

Surf, Strength and Waterfall reach Kiyo and most of the cave, and Rock Climb is needed for several items such as the Protector.

Where is the Dragon Scale in HGSS?

On 2F of Mt. Mortar, east of the ladder down to the 1F back area.

Do you need Flash in Mt. Mortar?

No, the cave is lit in HeartGold and SoulSilver.

What Pokémon can you catch in Mt. Mortar in HeartGold and SoulSilver?

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

Sources & picture credits

Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts and shops come from the pret/pokeheartgold decompilation, and the Pokémon sprites and dungeon entrance pictures are drawn from the game’s own graphics in it. The position maps are the Gold/Silver wiki’s Pokégear map renders. Location pictures and trainer sprites © Nintendo / Creatures / GAME FREAK, archived from the Pokémon Wiki on Fandom (listed on the image gallery).