in the cave of origin
the girl at the very end of sunnyshore, she will give you the HM when you get the final gym badge
HM08 Waterfall is in the Cave of Origin in Sootopolis City.
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
In Pokémon Ruby Sapphire and Emerald versions, HM7 contains the move waterfall. You can find the HM in the Cave of Origin.
in the cave in sootoplis city when your going to fight groundon
You can find Waterfall in the Dark Cave.
You can find the HM Waterfall in the Ice Path
cave of origin. sotopolis city when you need to fight groudon
you can find him in waterfall pond with HM dive or waterfall.
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
you will find waterfall on the 1st floor on ice path
you find it in the Ice Path