Phase 2 section
Pokémon Platinum The Underground and Fossils Walkthrough
Forest Badge Learn mining, traps, secret bases, and Platinum's fossil restoration loop. Exact Platinum encounters, every sourced trainer, items, hidden-item directions, puzzle notes, boss data, and completion checks.
Phase 2Forest Badge Floaroma, Valley Windworks, Eterna Forest, Gardenia, Galactic Eterna, and Rotom. 02 / 12 
Learn mining, traps, secret bases, and Platinum's fossil restoration loop. Every table on this page is joined to the named Platinum map, encounter, trainer, item, and script data; Diamond/Pearl rows are not substituted.
Source maps
Underground.
Platinum discipline
Morning, day, night, daily, Radar, swarm, dual-slot, static, gift, and event rows remain distinct when their requirements differ.
Route Plan
Use the Explorer Kit, complete the Underground Man's exercises, mine sparkle walls, and take recovered fossils to Oreburgh's Mining Museum.
Exact pret map constants (1)
MAP_HEADER_UNDERGROUND
Wild Pokémon
Each area below has its own table, split by encounter method. Standard grass and cave rates merge every base slot for a species and are shown per time window: morning 04:00-09:59, day 10:00-19:59, night 20:00-03:59. Swarm, Poké Radar, GBA dual-slot, and Trophy Garden replacements keep their own labeled rows. Underlying slot odds: grass 20/20/10/10/10/10/5/5/4/4/1/1; Surf and Old Rod 60/30/5/4/1; Good and Super Rod 40/40/15/4/1.
| Pokémon | Levels | Rate | Requirement / notes | ||
|---|---|---|---|---|---|
| Morning | Day | Night | |||
| Restore Armor Fossil | |||||
 Shieldon | 20 | Trainer ID-dependent fossil pool | Mining Museum. Only one of Skull or Armor Fossil is native to a given save before transfers/trades. | ||
| Restore Skull Fossil | |||||
 Cranidos | 20 | Trainer ID-dependent fossil pool | Mining Museum. The Underground fossil selection depends on the save's Trainer ID parity. | ||
| Underground mining | |||||
| National Dex fossils | 20 after restoration | Post-National Dex | National Dex required. Older-generation fossils join the mining pool after the National Dex. | ||
Trainers
No trainer object or fixed trainer-battle command is assigned to these source maps. Story-only NPC encounters remain described in the route plan.
Items And Services
No visible item ball, initialized berry patch, or curated one-time service is assigned to these exact source maps.
Hidden Items
No type-2 hidden-item event is placed on these exact Platinum source maps.
Puzzles, Warps, And Switches
This section has no source-significant switch or warp maze. Follow the route plan and collect each table row before leaving.
Boss Strategy And Partners
No boss, Gym Leader, rival branch, Commander, Elite Four member, or Champion is assigned to this section.
Completion Checklist
- Visit all 1 mapped subarea listed in the source constants.
- Record the 3 applicable wild, static, gift, trade, or event encounter rows across the per-area tables.
- Defeat or intentionally defer all 0 source-placed trainer battles.
- Collect or account for 0 visible items, berry patches, gifts, and services plus 0 Dowsing Machine items.
- Complete the route, story, puzzle, boss, partner, and event conditions above before following the next-section link.
Sources And Validation
- Primary source:
pret/pokeplatinumcommit7c0aa10b6a6aa09d8824e08bd8a36f6fc8b7ad8d. - Source layers:
res/field/encounters,res/field/events,res/field/scripts,res/trainers, personal held-item data, map headers, hidden-item table, berry initializer, trades, tutors, and Frontier sets. - Machine-readable validation report records page, map, trainer, item, encounter, asset, and source invariants.
Dex quick links