Gold & Silver Route 21
A calm channel closes the loop between Cinnabar Island and Pallet Town.
Route 21 is in Kanto. In the story you arrive from Pallet Town to the north and continue south to Cinnabar Island.
ROUTE 21 MAP
Pokemon Encounters
Mr. Mime patrols the Route 21 grass between Pallet and Cinnabar at up to 10 percent in the daytime. It is a Psychic-type you would otherwise have to win at the Game Corner. Tangela hides among it, with Lanturn and Chinchou on the rods below.
Old Rod2
Good Rod4
Super Rod4
Tangela
Also found in 3 other locations
TRAINERS
3 trainer battles at Route 21. Team rosters, levels, and weakness coverage for each.
Arnold
Route 21 Guide
Yes, and it's new to the series. Gold and Silver run on a real clock split into morning, day, and night, and the grass swaps species along with it. Hoothoot only turns up after dark, for instance, where the daytime route hands you Pidgey. If something won't appear, come back at a different hour.
Material for custom Poke Balls. Routes 37 and 42 and Azalea Town have trees that each drop one Apricorn a day, and Kurt in Azalea turns a color into a matching ball by the next morning. A white one becomes a Fast Ball for skittish Pokemon, a black one a Heavy Ball for heavy catches like Snorlax.