Phase 10 · Postgame east Unova

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Undella Bay and Abyssal Ruins — Pokémon Black & White Walkthrough

Dive into all four ruin floors within the step limits.

By Damodar Sharma Updated July 10, 2026 Walkthrough

Phase 10 · Postgame east Unova

Dive into all four ruin floors within the step limits.

Pokémon Black logo Pokémon White logo
Version
Season

Walkthrough

  1. Set the route. Read the item requirements below before entering; bring Surf, Strength, Waterfall, or the Dowsing Machine when a source direction names it.
  2. Clear in order. Battle the listed trainers from top to bottom, healing before any boss card or required story fight.
  3. Sweep the map. Collect visible items first, then make a second Dowsing Machine pass for every hidden tile.
  4. Finish the table. Apply the version and season filters before hunting; time of day never changes Black/White wild slots.

Pokémon locations

Each area below has its own table, split by encounter method. Rates merge every slot for a species and are shown per season; a single centered rate means all four seasons match. Time of day never changes Black/White wild slots. Identical Black and White slots share one row with both game markers.

PokémonGamesLevelsRate by seasonNotes
SpringSummerAutumnWinter
Surf
Wingull BW 25-55 60% Post-game.
Mantyke BW 25-55 30%30%30% Post-game.
Spheal BW 25-55 30% Post-game.
Pelipper BW 25-55 10% Post-game.
Rippling water (Surf)
Wailmer BW 25-60 90%90%90%60% Post-game.
Sealeo BW 25-60 30% Post-game.
Mantine BW 35-70 5%5%5% Post-game.
Wailord BW 35-70 5% Post-game.
Walrein BW 35-70 5% Post-game.
Fishing — Super Rod
Remoraid BW 35-55 55% Post-game.
Shellder BW 35-55 40% Post-game.
Luvdisc BW 35-55 5% Post-game.
Rippling water (Super Rod)
Luvdisc BW 35-60 40% Post-game.
Shellder BW 35-60 40% Post-game.
Octillery BW 35-70 15% Post-game.
Cloyster BW 45-70 5% Post-game.

Trainers

No ordinary placed Trainerentry is assigned to this page. Scripted boss variants appear in boss cards when applicable.

Items and gifts

Dread PlateBlack / White

North of the western entrance

Earth PlateBlack / White

Southeast quadrant

Fist PlateBlack / White

Southwest corner

Flame PlateBlack / White

West of the room's center

Icicle PlateBlack / White

South of the room's center

Insect PlateBlack / White

Near the northeast corner

Iron PlateBlack / White

Northwest quadrant

Meadow PlateBlack / White

Southwest quadrant

Mind PlateBlack / White

North of the room's center

Sky PlateBlack / White

North of the eastern entrance

Spooky PlateBlack / White

Southeast quadrant

Stone PlateBlack / White

Near the northern entrance

Toxic PlateBlack / White

Southeast corner

Zap PlateBlack / White

South of the western entrance

Relic Gold ×3Black / White

* Near the northwest corner * Southwest quadrant * East of the room's center

Relic Silver ×3Black / White

* Northwest quadrant * Northeast quadrant * Southeast quadrant

Relic Copper ×4Black / White

* Inside the northern entrance * Inside the eastern entrance * Inside the southern entrance * Southeast of the western entrance

Relic StatueBlack / White

Just north of the room's center

Relic VaseBlack / White

Southeast quadrant

Relic Gold ×3Black / White

* Northwest quadrant * Northeast quadrant * Along the east wall

Relic Silver ×2Black / White

* Northeast quadrant * Southwest quadrant

Relic Copper ×2Black / White

* Southwest quadrant * Near the entrance from 1F

Relic StatueBlack / White

Southwest corner

Relic VaseBlack / White

Northwest corner

Relic Band ×2Black / White

* Southeast corner * Northeast quadrant

Relic GoldBlack / White

Southwest corner

Relic SilverBlack / White

South side

Relic StatueBlack / White

Northwest corner

Relic Vase ×2Black / White

* Northeast corner * Along the west wall

Relic Band ×3Black / White

* Northeast quadrant * Southeast quadrant * In the room's center

Relic CrownBlack / White

In the center of the room

Hidden item checklist

No hidden item is listed for this page in the cached Black/White item table.

System reference

Abyssal Ruins

Unlock: Postgame Dive access in Undella Bay.

  • Each dive begins a 500-step timer; the current floor ejects the player when the counter expires.
  • Read the ciphers, route the central pillars, and collect every relic item before advancing to the next floor.