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Pokémon: Brilliant Diamond & Shining Pearl

Mt. Coronet (Side Tunnel)

Vincent Lau

This page is a guide for exploring the side tunnel of Mt. Coronet, accessible via the peak.

(1 of 2) The entrance to the side tunnel via the peak exterior.

The entrance to the side tunnel via the peak exterior. (left), Inside the side tunnel. (right)

You can reach the side tunnel by entering the side cave towards the north-east of the peak exterior. After cutting through the Waterfall Cave, head north and then go down the stairs on the left. It’s a bit hard to see, but there’s a cave on the right side, a few paces up the narrow path.


Map of the Mt. Coronet side tunnel.

When you enter, use Rock Climb to descend into the main body of the tunnel. If you haven’t visited the Spear Pillar yet, there will be some Team Galactic goons roaming around. At this point, the tunnel exit will be blocked, but you can fight the Galactic grunts for experience.

Once Team Galactic has left Mt. Coronet, you can pass through the tunnel via the exit towards the far north, at the lowest level of the tunnel. You can get there by using Rock Climb to descend further down, then make your way north. Or you could go the long way around by heading east, then north.

The northern exit will lead towards the southern part of Center: 1F, where you can grab TM02 Dragon Claw. From there, you can use Strength to return to the main section of Center: 1F.

Pokémon Encounters

Wild Pokémon - Ground

Pokémon Type Encounter Rate
437.png"Bronzong" IconBronzong pokemon_bdsp_steel17.pngpokemon_bdsp_psychic17.png 5%
433.png"Chingling" IconChingling pokemon_bdsp_psychic17.png 10%
35.png"Clefairy" IconClefairy pokemon_bdsp_fairy17.png 15%
42.png"Golbat" IconGolbat pokemon_bdsp_poison17.pngpokemon_bdsp_flying17.png 10%
75.png"Graveler" IconGraveler pokemon_bdsp_rock17.pngpokemon_bdsp_ground17.png 40%
67.png"Machoke" IconMachoke pokemon_bdsp_fighting17.png 10%
308.png"Medicham" IconMedicham pokemon_bdsp_fighting17.pngpokemon_bdsp_psychic17.png 10%

Trainer Battles

Team Galactic Grunt (H)

(1 of 2) This Galactic Grunt is guarding the rocky wall.

This Galactic Grunt is guarding the rocky wall. (left), He’ll send out Golbat as his only Pokémon. (right)

Pokémon Level Type
42.png"Golbat" IconGolbat 40 pokemon_bdsp_poison17.pngpokemon_bdsp_flying17.png

Team Galactic Grunt (I)

Pokémon Level Type
265.png"Wurmple" IconWurmple 34 pokemon_bdsp_bug17.png
266.png"Silcoon" IconSilcoon 36 pokemon_bdsp_bug17.png
267.png"Beautifly" IconBeautifly 38 pokemon_bdsp_bug17.pngpokemon_bdsp_flying17.png

Team Galactic Grunt (J)

Pokémon Level Type
453.png"Croagunk" IconCroagunk 35 pokemon_bdsp_poison17.pngpokemon_bdsp_fighting17.png
434.png"Stunky" IconStunky 38 pokemon_bdsp_poison17.pngpokemon_bdsp_dark17.png
453.png"Croagunk" IconCroagunk 38 pokemon_bdsp_poison17.pngpokemon_bdsp_fighting17.png

Item Locations

(1 of 2) Hidden Max Ether.

Hidden Max Ether. (left), Hidden Rare Candy. (right)

Item Location
Big Mushroom (Hidden) In the rock on the southernmost edge.
Max Ether (Hidden) Behind the cracked rock in the southeast corner - need HM Rock Smash.
Rare Candy (Hidden) In a rock behind a cracked rock in the central group of rocks. Need HM Rock Smash.
Revive (Hidden) In a rock on the ledge southeast of the Rare Candy - Need HM Rock Smash.
Nugget (Hidden) At the north end of the path that runs adjacent to the exit to the northern cavern.
Full Restore (Hidden) Behind a cracked rock in the northwest corner - need HM Rock Smash.
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Guide Information
  • Publisher
    Pokemon Company International
  • Platforms,
  • Genre
  • Guide Release
    29 October 2021
  • Last Updated
    23 April 2022
    Version History
  • Guide Author

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This strategy guide for Pokémon Brilliant Diamond & Shining Pearl contains all the information Pokémon trainers will need to complete the game and catch every single Pokémon!

In this remake of the classic Pokémon Diamond & Pearl, you’ll journey through the mystical Sinnoh region to become a Pokémon master. Along the way, you’ll confront the scheming Team Galactic and witness the awesome power of the Legendary Dialga or Palkia.

Currently included in our guide:

The following will be available via free updates to our guide:

  • A complete walkthrough of the main story and postgame.
  • A full guide for Super Contest Shows.
    • How to cook the best quality Poffins.
  • Explanation of advanced mechanics, such as IVs and EVs.
  • A detailed Sinnoh region Pokédex.

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