How To Get the Explorer Kit in Pokémon Platinum

Inside the underground man's house

You can get the Explorer Kit by speaking to an NPC in Eterna City called the Underground Man, who lives in a house next door to the Pokémon Center.

There are no prerequisites to obtaining this item, and you can receive it at any time after you first arrive in Eterna City.

Acquiring the Explorer Kit

The Explorer Kit couldn’t be easier to get; simply head into the house to the right of Eterna City’s Pokémon Center.

Heading to the Underground Man’s house next door to Eterna City’s Pokémon Center / Pokémon Platinum
Heading to the Underground Man’s house next door to Eterna City’s Pokémon Center.

The elderly guy you see in the middle of the room is the Underground Man, who was allegedly the first person to explore the Sinnoh Underground and now spends his time encouraging younger generations to do so.

Identifying the Underground Man inside his home / Pokémon Platinum
Identifying the Underground Man inside his home.

Speak to the Underground Man and he will hand you the Explorer Kit with no questions asked.

Receiving the Explorer Kit from Eterna City’s Underground Man / Pokémon Platinum
Receiving the Explorer Kit from Eterna City’s Underground Man.

Explorer Kit Details and Uses

The in-game description for the Explorer Kit / Pokémon Platinum
The in-game description for the Explorer Kit.

The Explorer Kit is a Key Item that allows you to explore the Underground. This is a vast network of tunnels underneath the Sinnoh Region where you can find special items, hunt for Fossils, and much more.

To use the Explorer Kit, simply select it from your Bag and choose Use.

Using the Explorer Kit from the Bag / Pokémon Platinum
Using the Explorer Kit from the Bag.

Local wireless signals will activate (for multiplayer purposes) and you will be prompted to save the game. Then a hole will open up and you will drop down into the cavernous underworld.

Entering the Underground by using the Explorer Kit / Pokémon Platinum
Entering the Underground by using the Explorer Kit.

The layout of your screens will change as soon as you hit the bottom: all character action will take place on the touch screen, and an Underground map will be displayed on the upper screen.

Exploring the Sinnoh Underground / Pokémon Platinum
Exploring the Sinnoh Underground.

You can do several things in the Underground, the most useful of which is digging for items in a mining minigame.

By mining in the Underground, you can unearth dozens of rare treasures like Pokémon Fossils, Weather Rocks, Arceus Plates, and many others.

Mining for treasure in the Underground / Pokémon Platinum
Mining for treasure in the Underground.

Mining you will also let you uncover Spheres: smooth, round minerals of varying colors and sizes.

These Spheres can be used to buy goods from the many Hikers scattered around the Underground’s tunnels.

Bartering with a Hiker / Pokémon Platinum
Bartering with a Hiker.

Over time, you’ll even be able to create and decorate your own Secret Base for others to find.

Standing in a sparsely-decorated Secret Base / Pokémon Platinum
Standing in a sparsely-decorated Secret Base.

Chris Haygood

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Chris is an American freelance writer and lifelong gamer. RPGs have been his genre of choice ever since he got Pokémon Blue in 1867, but if he finds a good rhythm game, he will prioritize playing it over both eating and breathing.

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