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How to Access the Underground
Pokemon Brilliant Diamond and Shining Pearl

How to Access the Underground

Learn how to get the Explorer Kit in Eterna City and use it to access the Grand Underground in Pokemon Brilliant Diamond and Shining Pearl. Discover Hideaways, dig for treasure, and build your Secret Base!

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Learn how to get the Explorer Kit in Eterna City and use it to access the Grand Underground in Pokemon Brilliant Diamond and Shining Pearl. Discover Hideaways, dig for treasure, and build your Secret Base!

Alright, so you want to dive into the Grand Underground in Pokémon Brilliant Diamond and Shining Pearl? It's super easy once you know how! First things first, you'll need the Explorer Kit. Think of it as your personal ticket to a whole new world beneath Sinnoh.

Where to Find the Explorer Kit: Head over to Eterna City. The house just to the right of the Pokémon Center is where you'll snag it. Once you have it, it'll be stashed away safely in the 'Key Items' section of your bag. Using this kit is your instant fast travel to the Grand Underground, and you can use it from pretty much anywhere!

How it Works: The cool thing is, wherever you decide to use the Explorer Kit is exactly where you'll pop out in the Grand Underground. But don't worry about getting lost; using the kit again will always bring you right back to where you started above ground, no matter where you are underground.

What's Down There?

The Grand Underground is packed with awesome stuff to do:

Pokémon Hideaways

These are like mini-biomes scattered throughout the underground, and they're your best bet for finding all sorts of Pokémon, including some you won't find anywhere else in the Sinnoh region! You can actually see the Pokémon wandering around, just like in Pokémon Sword and Shield. To start a battle, just walk up and touch one!

Digging for Treasure

Ever wanted to be a treasure hunter? You can! Certain walls in the Grand Underground have hidden goodies behind them. You'll use the Dowsing Machine app on your Pokétch to find these dig spots. Once you find one, you'll get a puzzle screen where you can use a Sledgehammer and a Pickax to dig away the rocks. Be careful though, there's a limit to how much you can dig before the wall collapses!

  • Sledgehammer: Clears a big chunk of rocks but makes the wall collapse faster.
  • Pickax: Works on smaller areas but is gentler on the wall.

A good strategy is to start with the Sledgehammer to clear out a lot, then switch to the Pickax to carefully uncover your treasure. You can swap tools by pressing the R button or tapping the touch screen. Remember, you need to fully uncover the treasure to grab it!

Your Own Secret Base

Want a place to call your own underground? You can use the Digger Drill on a wall to create your very own Secret Base! Inside, you can decorate with Pokémon statues, and here's the kicker: these statues can actually influence which Pokémon appear in the Hideaways!

Multiplayer Fun

You can even team up with friends to explore the Grand Underground! You can do this via Local or Online play. Just make sure everyone has their own copy of the game and, for online play, an active Nintendo Switch Online subscription.

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