you get it in icefall cave on 4 island clear the ice to get to the ladder that will lead you to the HM waterfall.
Waterfall
waterfall
It's in the Icefall Cave on Four Island.
its located on four island in the cave
In Icefall Cave, in Four Island
In icefall cave at four island.
in the cave on 4 island
No, it isn't but you can Rock Smash and Waterfall
In Icefall Cave, in Four Island
Use the TM waterfall. I think.
Look for yourself thicko!
That can be found in icefall cave. also Seaking learn waterfall naturally at level 40