that big fat guy standing next to where the weird tree(sudowoodo) will give it you.
you find it
Find a Pokemon that can learn Rock Smash. Like Geodude.
you can find the legendary Pokemon regirock
In Pinwheel Forest.
1) Find the HM Rock Smash. 2) Tech it to a Pokemon 3) Press A while facing the rock you want to crush.
Rock Smash-ing the Rock Smash-able rocks at the Ruins of Alph
you can find rock smash by talking to a man just to the right of where sudowoodo was (violet city side)
You can find it by chance when you use rock smash on rocks
You use rock smash and can sometimes find fossils.
rock smash isn't in Pokemon red version
Pokemon liquid crystal how to get rock smash
A wide variety of Pokemon can use Rock Smash. Most Fighting, Rock and Ground type Pokemon can learn the move Rock Smash from the TM or HM depending on the Pokemon version.