Pokémon Gold and Silver/Mt. Mortar

Mt. Mortar is one of the bigger dungeons in this game and although it holds a bunch of items (some better than others), the most interessting thing about the mountain is that you can get a Tyrogue, which can evolve into three different Pokémon (Hitmonlee, Hitmoncahn and Hitmontop) based on its stats at level 20. Unfortunately, you are only able to reach it after you can use Waterfall (8th badge).

Mt. Mortar Entrance

Trainers			Entrance Items
	Pokémaniac Miller: 1020 Nidoking (lvl. 17) Nidoqueen (lvl. 17)		Hyper Potion (hidden in a rock at the end of a dead-end path just right of the waterfall) Ether Guard Spec Revive
	Super Nerd Markus: 608 Slowpoke (lvl. 19)

Pokémon Found

Mt. Mortar Entrance encounters

	Gold			Silver			Crystal
	Morn	Day	Night	Morn	Day	Night	Morn	Day	Night
Rattata	14%	14%	14%	14%	14%	14%	30%	30%	30%
Raticate	N/A	N/A	N/A	N/A	N/A	N/A	5%	5%	5%
Zubat	60%	60%	60%	60%	60%	60%	30%	30%	30%
Golbat	N/A	N/A	N/A	N/A	N/A	N/A	10%	10%	10%
Machop	20%	20%	20%	20%	20%	20%	20%	20%	N/A
Geodude	5%	5%	5%	5%	5%	5%	5%	5%	5%
Marill	1*%	1*%	1*%	1*%	1*%	1*%	N/A	N/A	20%

• Marill encounter rate is much higher during swarms

Pokémon Found (Water)

Surfing throughout Mt. Mortar encounters

	Gold			Silver			Crystal
	Morn	Day	Night	Morn	Day	Night	Morn	Day	Night
Goldeen	90%	90%	90%	90%	90%	90%	60%	60%	60%
Seaking	10%	10%	10%	10%	10%	10%	10%	10%	10%
Marill	N/A	N/A	N/A	N/A	N/A	N/A	30%	30%	30%

Mt. Mortar Fishing

	Old Rod	Gold Rod	Super Rod
Magikarp	85%	35%	20%
Goldeen	15%	65%	70%
Seaking	N/A	N/A	10%

Mt. Mortar Lower Cave

Lower Cave Items				Hyper Potion (need Strength) Escape Rope (need Strength) Max Repel (hidden in a lonely rock in the northeast corner) Max Revive Ultra Ball (Crystal) Nugget (Crystal)

Pokémon Found

Mt. Mortar Lower Cave encounters

	Gold			Silver			Crystal
	Morn	Day	Night	Morn	Day	Night	Morn	Day	Night
Rattata	10%	10%	10%	10%	10%	10%	30%	30%	30%
Raticate	N/A	N/A	N/A	N/A	N/A	N/A	10%	10%	20%
Zubat	5%	5%	5%	5%	5%	5%	5%	5%	10%
Golbat	N/A	N/A	N/A	N/A	N/A	N/A	5%	5%	5%
Machop	35%	35%	35%	35%	35%	N/A	20%	20%	N/A
Geodude	50%	50%	50%	50%	50%	50%	30%	30%	30%
Marill	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	5%

Mt. Mortar Upper Cave

Trainers			Upper Cave Items
	Super Nerd Hugh: 2496 Seadra (lvl. 39) Crystal only		Rare Candy Max Potion TM40: Defense Curl Escape Rope Dragon Scale Elixir Full Restore (hidden in a rock at the end of a dead-end path toward north)

Pokémon Found

Mt. Mortar Upper Cave encounters

	Gold			Silver			Crystal
	Morn	Day	Night	Morn	Day	Night	Morn	Day	Night
Raticate	10%	10%	10%	10%	10%	10%	10%	10%	20%
Golbat	5%	5%	5%	5%	5%	5%	5%	5%	15%
Machop	5%	5%	5%	5%	5%	5%	5%	5%	N/A
Machoke	30%	30%	30%	30%	30%	30%	30%	30%	N/A
Geodude	20%	20%	20%	20%	20%	20%	20%	20%	30%
Graveler	30%	30%	30%	30%	30%	30%	30%	30%	30%
Marill	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	5%

Mt. Mortar Basement

Trainers			Entrance Items
	Blackbelt Kiyo: 816 Hitmonlee (lvl. 34) Hitmonchan (lvl. 34) Blackbelt Kiyo will reward you with a level 10 Tyrogue, which can be evolved into Hitmonlee, Hitmonchan or Hitmontop, after beating him.		Hyper Potion (need Surf) Full Heal (need Surf) Max Revive (hidden in a solitary rock in the northeast corner)

Pokémon Found

Mt. Mortar Basement encounters

	Gold			Silver			Crystal
	Morn	Day	Night	Morn	Day	Night	Morn	Day	Night
Rattata	20%	20%	20%	20%	20%	20%	N/A	N/A	N/A
Raticate	5%	5%	5%	5%	5%	5%	5%	5%	5%
Zubat	60%	60%	60%	60%	60%	60%	60%	60%	60%
Golbat	N/A	N/A	N/A	N/A	N/A	N/A	20%	20%	20%
Machop	10%	10%	10%	10%	10%	10%	10%	10%	N/A
Geodude	5%	5%	5%	5%	5%	5%	5%	5%	5%
Marill	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	10%