You need to beat the elite four, catch 50 different kinds of pokemon and then Bill will bring you to one island to talk about linking to the hoenn region. Then Bill will give you the rainbow pass which let's you go to islands 4-7. Good luck
do the errand for bill on one island.
Four Island
It is in Four island
In icefall cave.
island four or island five.
Only in firered and leafgreen can you venture to the sevii islands and four island.
It's on four island.
Four Island, Icefall Cave.
It is in Island four.
It's in the Icefall Cave on Four Island.
its located on four island in the cave
In Icefall Cave, in Four Island