What two moves do you need to get through the tohjo falls for Pokemon heart gold?

You need two specific HM moves to get through Tohjo Falls in Pokémon HeartGold:

* Strength: Used to push boulders out of the way. You learn this from the gym leader in Azalea Town, Bugsy.

* Cut: Used to cut down trees blocking your path. You learn this from the fisherman in the north-east part of Azalea Town, near the route leading to Violet City.

These are the only two moves you need to get through Tohjo Falls.