Grand Underground Guide

The Grand Underground in Pokemon Brilliant Diamond and Pokemon Shining Pearl is an expansive labyrinth where you can dig down to try and excavate rare items, exchange treasures, and encounter Pokemon that you wouldn't have found in the original 2006 Nintendo DS Diamond and Pearl games. This Grand Underground guide will tell you everything you need to know about this feature in Pokemon Brilliant Diamond and Pokemon Shining Pearl.

The Grand Underground in Pokemon Brilliant Diamond and Pokemon Shining Pearl has a revamped Secret Base mechanic, the inclusion of 21 unique hideaways that house wild Pokemon and excavation for items. The Grand Underground itself is split into six unique sections that can each be accessed by dropping below the surface from different overworld locations across Sinnoh. Although the area names are the same as in the original Nintendo DS games that were released in 2006 you will find that they have brand-new layouts in Pokemong Brilliant Diamond and Pokemon Shining Pearl. Each of the areas offers a different environment and different Pokemon encounters.

- Twinleaf Town

- Eterna City

- Celestic Town

- Snowpoint City

- Sunyshore City

- Fight Area

The level of the Pokemon you encounter in the Grand Underground will depend on how many badges you have earned during your progression through the game.

- 1 Badge earned: Level 16-20

- 2 Badges earned: 25-29

- 3 Badges earned: 29-33

- 4 Badges earned: 33-37

- 5 Badges earned: 36-40

- 6 Badges earned: 39-43

- 7 Badges earned: 42-46

- 8 Badges earned: 50-55

- Post-Elite Four: 58-63

Where to Find Pokemon

Listed below are the exclusive Pokemon that can be found in the Grand Underground for both Pokemon Brilliant Diamond and Pokemon Shining Pearl. Click here to see where you can find them

Diamond exclusive Grand Underground Pokemon

Before National Pokedex

- Elekid

- Gligar

- Murkrow

- Scyther

- Silcoon

- Stunky

- Skuntank

After National Pokedex

- Caterpie

- Dewgong

- Ekans

- Growlithe

- Kecleon

- Larvitar

- Mawile

- Nuzleaf

- Pupitar

- Seedot

- Seel

- Solrock

- Zangoose

Pearl exclusive Grand Underground Pokemon

Before National Pokedex

- Cascoon

- Glameow

- Magby

- Misdreavus

- Pinsir

- Purugly

- Teddiursa

After National Pokedex

- Bagon

- Lotad

- Lombre

- Lunatone

- Sableye

- Sandshrew

- Sandslash

- Sealeo

- Seviper

- Shelgon

- Slowpoke

- Spheal

- Vulpix

- Weedle

How to Dig for Items

Digging in the Grand Underground in order to find items is simple, you just have to keep an eye out for a glistening point along a tunnel wall and interact with it to start digging. The Explorer Kit that you have contains a mallet and a hammer, which you can use to search for the hidden items scattered throughout the Grand Underground. Items you can find are listed below.

- Armor Fossil (Shining Pearl exclusive)

- Blue Shard

- Claw Fossil

- Damp Rock

- Dome Fossil

- Draco Plate

- Dread Plate

- Earth Plate

- Everstone

- Fire Stone

- Fist Plate

- Flame Plate

- Float Stone

- Green Shard

- Hard Stone

- Heart Scale

- Heat Rock

- Helix Fossil

- Icicle Plate

- Icy Rock

- Insect Plate

- Iron Ball

- Iron Plate

- Leaf Stone

- Light Clay

- Max Revive

- Meadow Plate

- Mind Plate

- Moon Stone

- Mysterious Shard L

- Mysterious Shard S

- Odd Keystone

- Old Amber

- Oval Stone

- Pixie Plate

- Rare Bone

- Red Shard

- Revive

- Root Fossil

- Skull Fossil (Brilliant Diamond exclusive)

- Sky Plate

- Smooth Rock

- Splash Plate

- Spooky Plate

- Star Piece

- Stone Plate

- Sun Stone

- Thunder Stone

- Toxic Plate

- Water Stone

- Yellow Shard

- Zap Plate

Take a look at our How to Catch Legendary Pokemon Guide to find out the easiest way to defeat them in battle.