Icefall Cave is where you get 1 of the gems for Celios machine on island 1.
It can be caught in the inner cave of Icefall Cave. It has a 5% chance of appearing.
Icefall cave is on 1 island or 3 island sorry i dont know exactley
you could either search for it in icefall cave or level up a seaking or a goldeen until it learn waterfall i got this info from http://bulbapedia.bulbagarden.net/wiki/Main_Page
she's on 4 island in the cave to your right when you enter 4 island.
The Icefall Cave is located on Four Island, which is only available in FR/LG.
on Island #4 in icefall cave icefall cave
Four Island
It can be caught in the inner cave of Icefall Cave. It has a 5% chance of appearing.
icefall cave firered only
icefall cave
It is in Four island
Inside icefall cave.
In icefall cave.
In icefall cave.
Four Island, Icefall Cave.
icefall cave on island 4
It's in the Icefall Cave on Four Island.