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Appendix:FireRed and LeafGreen walkthrough/Section 5
Route 11 features several large patches of tall grass that separate Vermilion City from Route 12. To the northeast is Lavender Town, but a sleeping Snorlax blocks the east end of the route, forcing the player to find another way to get there.
Inside the gate, one of Oak's aides will reward the player for catching at least 30 different species with the Itemfinder, which detects any hidden items in the vicinity. Some items can only be obtained when standing on top of them.
Not far from the aide is a kid who is hoping to trade. He offers either a NidorinaFR or a NidorinoLG, in exchange for its opposite-gender counterpart.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Trainers with a Vs. Seeker by their names, when alerted for a rematch using the item, may use higher-level Pokémon.
Diglett's Cave
Diglett's Cave is a long tunnel that spans nearly the whole region, linking Route 11 to the east side of Route 2. Like the name implies, the only Pokémon that can be found here are Diglett and Dugtrio.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Route 2 (east)
The east side of Route 2 was inaccessible when the player first passed through. Inside the house is a man looking to swap an Abra for his Mr. Mime, a rare Psychic-type Pokémon.
Another of Oak's aides is waiting inside the gate. This assistant will reward the player for catching 10 different species with HM05 (Flash). Flash can be used to light up certain caves, making travel easier.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Viridian City
As Viridian is so close, it is easy to revisit the city. Cut down the tree near the pond and speak to the man, a Move Tutor. He offers to teach a Pokémon how to use the Dream Eater move.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Pewter City
With HM01, it is possible to cut down the tree in the northeast part of the city to enter the museum's laboratory. Talk to the scientist standing next to the pedestal to receive the Old Amber. Take this to Cinnabar Island to regenerate an ancient Aerodactyl from the DNA trapped inside.
There are also two other scientists in the back room. The one near the entrance is a Move Tutor, and offers to teach Seismic Toss to one of the player's Pokémon. Seismic Toss can be helpful against durable Pokémon because it inflicts damage equal to the user's level, regardless of the combatants' Attack or Defense.
The next stop on the way to Lavender Town is Route 9. Either travel east from Pewter City again, or return to Vermilion City and head north. Once in Cerulean, pass through the burgled home and chop down the tree on the east side of town to continue.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Trainers with a Vs. Seeker by their names, when alerted for a rematch using the item, may use higher-level Pokémon.
Route 10 (north)
Route 10
To the south is a conveniently-placed Pokémon Center, the last outpost of civilization before venturing into Rock Tunnel. This dark, winding tunnel emerges on the south side of Route 10, just outside of Lavender Town.
Another of Oak's aides can be found inside the Pokémon Center. If the player has caught at least 20 different species, he rewards him/her with an Everstone. When held, this unique stone prevents the Pokémon from evolving.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.