JOHTO · Union Cave

Union Cave – Pokémon & Locations

Every wild Pokémon on Union Cave in HeartGold/SoulSilver: catch rates, levels and trainers, plus the HeartGold/SoulSilver differences and a calculated best-catch tip. Data as of HeartGold. Union Cave connects Route 32 with Route 33.

WILD POKÉMON

Encounter table

Source: PokéAPI (HeartGold/SoulSilver). Rates are the max encounter slots per species and method.View on the map (other edition selectable)

ITEMS

Items on Union Cave

TM39 (Rock Tomb)

Gift

X Defense

Found

Great Ball

Gift

Potion

Found

Hyper Potion

Found

Elixir

Found

Revive

Hidden
TRAINERS

Trainers on Union Cave

Route trainer data is missing. This region only lists key battles (gyms, Elite Four, Champion).

CALCULATED TIP

Best catch on Union Cave

Tentacruel — Gen V (2010) sprite

Tentacruel has the highest base stat total (515) of every catchable species here, statistically the strongest catch on Union Cave. Automatically calculated from stats, not a meta ranking.

NUZLOCKE

Nuzlocke on Union Cave

Log encounter

Log the first catch on Union Cave straight into a new Nuzlocke run. The tracker knows every encounter on this route.

Q&A

22 species. Most common: Magikarp (85 %), Goldeen (70 %), Tentacool (60 %). The rarest catches include Rattata (10 %), Tentacruel (10 %), Onix (10 %). All rates are the max encounter slots from PokéAPI (HeartGold).

Yes, the versions differ. HeartGold and SoulSilver differ on Union Cave like this: Rattata: 10% (HG) vs. 30% (SS); Sandshrew only in HeartGold (20%)

Yes. There are 7 items on Union Cave: TM39 (Rock Tomb), X Defense, Great Ball, Potion, Hyper Potion, Elixir, Revive.

Tentacruel. With a base stat total of 515, Tentacruel has the highest total of all catchable species here: calculated tip for Union Cave (derived automatically from stats, not a meta ranking).

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Union Cave on the interactive map