The Explorer Kit is a Key Item in Pokémon Diamond, Pearl, and Platinum. It is used to gain access into the Underground. The player receives the Kit by the Underground Man in Eterna City, once you make it to that point in the game. You can use the Explorer Kit by going into the menu and into your Bag and selecting Key Items. Once selected, a message will pop up asking if you will like to save your game, and indicates that DS Wireless Connection
will be turned on. You will then be transported into the Underground, and where you will be sent to depends on your location above ground.
Your Kit includes many basic items used for digging including: a hammer and pickaxe, a map, a radar, and containers for Spheres and Decorations (which are known as Goods). You must use your hammer and pickaxe to dig through the tunnel walls in order to get the treasure hidden inside.
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