look around in mossdeep for Stevens house and it's there
in the cave of origin
go to Stevens haus! near the trees.
HM08 Waterfall is in the Cave of Origin in Sootopolis City.
go to Sootopolis, then go to the cave of origin. You will find a pokeballl in there in which contains the TM Waterfall
in the cave in sootoplis city when your going to fight groundon
you have to have beaten the elite 4 and givenh celio on island one the ruby you go to island 4 and find hm 7 waterfall in waterfall cave
its past Fallabour town, you need the HM waterfall to access that part
cave of origin. sotopolis city when you need to fight groudon
the girl at the very end of sunnyshore, she will give you the HM when you get the final gym badge
you get HM waterfall on route 18
there is no hm waterfall that i know of
You cannot go through waterfalls but you can climb them with the HM waterfall and a Pokemon that can learn it... you will also need the corrosponding gym badge