Mt. Moon HGSS · Kanto Area

Mt. Moon in Pokémon HeartGold and SoulSilver — Mt. Moon entrance picture (day, from the game)

Mt. Moon is the cave between Route 3 near Pewter City and Route 4 toward Cerulean City. When you first come in, Rival Silver, who has been training in Kanto, stops you for another battle. Beyond the main chamber lies Mt. Moon Square, where Clefairy gather to dance around a huge Moon Stone on Monday nights.

Region: Kanto
Wild Pokémon: 8
Items: 2
Trainers: 3
HMs: Surf, Rock Smash

Connects to: Route 3 · Route 4

Where Mt. Moon is on the Kanto map Mt. Moon on the Kanto Pokégear map

Wild Pokémon

Mt. Moon, Square Entrance

Walking in the cave encounter rate 15
Pokémon	Type	Lv.	Morning	Day	Night
ZubatHG	PoisonFlying	6	30%	30%	30%
ZubatSS	PoisonFlying	6–8	50%	50%	50%
GeodudeHG	RockGround	8	30%	30%	30%
GeodudeSS	RockGround	8–10	35%	35%	35%
SandshrewHG	Ground	8	20%	20%	20%
Paras	BugGrass	12	10%	10%	10%
SandslashHG	Ground	10	5%	5%	5%
Clefairy	Normal	8	5%	5%	5%

Hoenn Sound

Makuhita 20%, Lv. 8

Absol 20%, Lv. 6–8Play the Hoenn Sound radio channel (after the National Pokédex): replaces four 10% grass slots.

Sinnoh Sound

Chingling 20%, Lv. 8

Bronzor 20%, Lv. 6–8Play the Sinnoh Sound radio channel (after the National Pokédex): replaces four 10% grass slots.

Square

Surfing encounter rate 15
Pokémon	Type	Lv.	Chance
Poliwag	Water	35	60%
Magikarp	Water	30–35	40%

Fishing
Rod	Pokémon	Lv.	Chance
Old Rod	Magikarp	10	100%
Good Rod	Magikarp	20	70%
Good Rod	Poliwag	20	30%
Super Rod	Poliwag	40	100%

Square Clefairy Event

Surfing encounter rate 15
Pokémon	Type	Lv.	Chance
Poliwag	Water	30–35	100%

Fishing
Rod	Pokémon	Lv.	Chance
Old Rod	Poliwag	10	90%
Old Rod	Magikarp	10	10%
Good Rod	Poliwag	20	90%
Good Rod	Magikarp	20	10%
Super Rod	Poliwag	40	90%
Super Rod	Magikarp	40	10%

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

Rival Silver Mt. Moon

If you chose Chikorita

Prize ₽3,200

Rival Silver Mt. Moon

If you chose Cyndaquil

Prize ₽3,200

Rival Silver Mt. Moon

If you chose Totodile

Prize ₽3,200

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

Item	How	Where
Revive	Hidden	Mt. Moon
Max Revive	Hidden	Square

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

Shops

Square Shop

Poké Doll ₽1,000Fresh Water ₽200Soda Pop ₽300Lemonade ₽350Repel ₽350Heart Mail ₽50

Tips

Rival Silver battles you on arrival with Sneasel Lv46, Golbat Lv47, Magneton Lv46, Gengar Lv48, Alakazam Lv48 and his Lv50 starter.
On Monday nights the Clefairy dance in Mt. Moon Square; afterwards, smash the big rock with Rock Smash to find a Moon Stone.
The little shop in Mt. Moon Square sells Poké Dolls, drinks, Repels and Heart Mail.
Clefairy is a 5% encounter in the cave at any time of day.
Paras appears at 10% at Lv12, and Sandshrew and Sandslash appear only in HeartGold.
A Revive and a Max Revive are hidden, one in the cave and one in Mt. Moon Square.

Walkthrough: Part 21: Mt. Moon, Cinnabar Island and Blaine

More pictures

Mt. Moon: Mt. Moon entrance picture (night, from the game) — Mt. Moon entrance picture (night, from the game)

FAQ

When do the Clefairy dance at Mt. Moon in HeartGold and SoulSilver?

On Monday nights in Mt. Moon Square; break the big Moon Stone rock with Rock Smash afterwards to get a Moon Stone.

What is Silver’s team at Mt. Moon in HGSS?

Sneasel Lv46, Golbat Lv47, Magneton Lv46, Gengar Lv48, Alakazam Lv48 and a Lv50 Typhlosion, Feraligatr or Meganium, depending on your starter.

Where can you catch Clefairy in HeartGold and SoulSilver?

In Mt. Moon, at a 5% rate in the morning, day and night.

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

8 species: Zubat, Geodude, Sandshrew, Paras, Sandslash, Clefairy, Poliwag, Magikarp.

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).