Pokémon Gold and Silver/Mt. Mortar

Although you can access Mr. Mortar earlier in the game, you won't have Waterfall the first time you pass by. To conquer the inside of the mountain properly, you'll need to bring along Pokémon that use Surf, Flash, Strength, and Waterfall. An Escape Rope or a Pokémon that knows Dig will help you if you get lost.

Now that you have all eight badges, you can head straight to the Template:~ if you want. But first you may want to take a detour to Mt. Mortar, the network of caves north of Template:~.

Changes in Crystal

This area has changed a lot since Gold and Silver: the maps have been tweaked a bit, two trainers have been added,, and there are a lot more items to find. But if you already caught a Marill in Route 44, there aren't any new Pokémon to find here, except for the Tyrogue at the end.

Mt. Mortar Entrance

Floor 1 entrance

Three entrances to the Mountain

There are three entrances to this dungeon along Route 44, but the one to take is the middle. In Crystal, it's the quickest way to the Karate King, and all the best items in the second floor, and the alternate first floor, are right on the way. After you beat the Master, you can push away the rock and get all the good stuff in the basement.

You'll need to bring Pokémon with Surf, Flash, and Waterfall. But heed this last warning: Take no more than five Pokémon with you.

This is where the Marill Live

Marill is pretty tought to catch in Gold and Silver—it doesn't appear very often, and when it does, it will be on the dirt parts of the map, even though it's a Water-type. You'll probably have to wait for the swarm. A trainer named Hiker Parry way over on Template:~ is the one to talk to about that.

Use HM 07 to reach 2F and skip the rest of the dungeon

Mt. Mortar looks intimidatingly huge, but most of it is just a big waste of time. From the entrance, you can go in to the lower cave, or down into the basement, but outside of a few easily purchased items, there's nothing on either floor. All of the good stuff is actually found on the same path. Surf north, then use Waterfall to get up to the entrance in the back of the cave. Weave your way through this tedious maze of hills and ponds, going a little out of your way to grab the Rare Candy, TM 40, and the Dragon Scale that is needed to evolve Seadra into Kingdra. Then take the ladder in the upper left corner to a thin strip of the lower cave, where you can pick up a Max Revive (and an Iron in Crystal) and head up the ladder along the left side of the cave to the Karate King's location.

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 (Gold/Silver) Revive (Crystal)
	Super Nerd Markus: 608 Slowpoke (lvl. 19)

Mt. Mortar Lower Cave

Floor 1 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)

Mt. Mortar Upper Cave

Floor 2

Trainers
	Super Nerd Hugh: 2496 Seadra (lvl. 39) Crystal only

Upper Cave Items
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)

Mt. Mortar Basement

Basement

Kiyo , the Blackbelt from Red/Blue/Yellow, has relocated to the depths of this mountain, but it wasn't far enough to get away from you. Take down his two fighters and he will give you a Tyrogue Pokémon, but only if you have an open slot. If you do not, Tyrogue will be rejected, and you will lose the opportunity to obtain this Pokémon.

Trainers
	Blackbelt Kiyo: 816 Hitmonlee (lvl. 34) Hitmonchan (lvl. 34)

Entrance Items
Hyper Potion (need Surf) Full Heal (need Surf) Max Revive (hidden in a solitary rock in the northeast corner)

Pokémon Found

Entrance

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

Entrance (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%

Lower Cave

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%

Upper Cave

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%

Basement

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%

#236 Tyrogue

Tyrogue exists merely to evolve. It has poor stats and can learn nothing beyond Tackle. But at level 20, it will evolve into Hitmonlee (if its Attack is higher than its Defense), Hitmonchan (if its Defense is higher than its Attack), or Hitmontop (if the two stats are equal), Use Iron or Protein when Tyrogue is at level 19 to engineer the one you want. Hitmontop is new, but never learns anything good, so Hitmonlee is still the best.

Mt. Mortar Fishing

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