Red & Blue Underground Path 5-6

A long passage running under Saffron City to join Routes 5 and 6, letting Trainers slip straight past the walled-off city.

Underground Path 5-6 is in Kanto, with the entrance to Route 6. In the story you arrive from Route 5 through its entrance and it comes before Cerulean Gym.

UNDERGROUND PATH 5-6 MAP

Red & Blue

Underground Path 5-6 Walkthrough

0 trainers 1 item 1 gift 0 species

Route 5 Entrance

0 TRAINERS · 0 ITEMS · 1 GIFT · 0 SPECIES
1
Your trip begins in a small gatehouse off Route 5, where a Little Girl offers a Nidoran swap.
  1. Walk in from Route 5 and speak to the Little Girl by the stairs to trade your male Nidoran for her female one, SPOT.
  2. Holding both Nidoran lines now, take the stairs beside her down into the tunnel.
In-game tradeLittle GirlTrade: Nidoran♀ (SPOT) for your Nidoran♂

Underground Path

0 TRAINERS · 1 ITEM · 0 SPECIES
2
Downstairs, Underground Path 5-6 becomes a walled corridor with no trainers or wild Pokemon; both its items are hidden, so face each spot and press A.
  1. Check the floor of the path linking Routes 5 and 6, just west of where the stairs drop you, to find the Full Restore.
  2. Follow the corridor south, collect the X Special close to the far end, then climb the south stairs toward Route 6.
Full Restore

Pokemon Encounters

✦Special encounters1
#029Nidoran♀ (female)
Trade Arrives at the level of the Pokemon you trade
Trade
Nidoran♀ (female)
#029

Nidoran♀ (female)

Poison
Evolves into Nidorina at Lv 16
EV yield
1 HP
Acquisition
Trade
How to get it
Trade Nidoran♂
Arrives at the level of the Pokemon you trade
NPC locationUnderground Path 5-6View on map

ITEMS

The tunnel between Routes 5 and 6 holds just two items, a Full Restore and an X Special, both off the main walkway.

Hidden2
Full Restore
X Sp. Atk
HIDDEN

Full Restore

Hidden item in the Underground Path between Routes 5 and 6
Effect

Restores HP to full and cures any status ailment and confusion.

Hidden2
HIDDEN

Full Restore

Hidden item in the Underground Path between Routes 5 and 6
Effect

Restores HP to full and cures any status ailment and confusion.

HIDDEN

X Sp. Atk

Hidden item in the Underground Path between Routes 5 and 6 (Gen 1: X Special)
Effect

Raises Special Attack by one stage in battle. Raises happiness.

Underground Path 5-6 Guide

  • Yes. Each version locks away a handful of route species. Ekans, Oddish, Mankey, and Growlithe stay in Red, while Sandshrew, Bellsprout, Meowth, and Vulpix belong to Blue, with Scyther and Pinsir split the same way. Trading with the other version is the only way to fill those gaps.

  • Three rods, three givers. A fisherman in Vermilion City hands over the Old Rod, which only ever hooks Magikarp. The Good Rod comes from a fishing fan in Fuchsia City and adds Poliwag, Goldeen, and other common catches. The Super Rod, waiting on Route 12, reaches the rod-only rarities listed here.

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