This Island is Incredibly Small and doesnt have much at all, except the Breeding Centre for Red and Green! It can only accessed after you have beaten the Elite 4, got the National Dex and the Ruby Plate from Island 1:

What It also has is an Ice Cave in which HM07, Waterfall is found

Location Map of Four Island

Hover to get area

Four Island Icefall Cave

Wild Pokémon on Four Island

Here are the Pokémon you will find in the wild on Four Island:

In The Cave
Zubat Common
Common
Golbat Rare
Rare
Swinub Common
Common
Delibird Rare
Sneasel
Rare
Shellder Uncommon
Staryu
Uncommon
Seel Common
Common
Dewgong Rare
Rare
Lapras Rare
Rare
In The Water
Psyduck Common
Slowpoke
Common
Poliwag Common
Common
Poliwhirl Rare
Rare
Gyarados Rare
Rare
Wooper Common
Common

Thats all on Four Island...Click Here for Five Island

 
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