If you mean rock smash then a hiker in the cave by Orebugh gives it to you after you have obtained the Coal Badge.
you need rock climb
You cannot move the moss rock, because it is a training place where you can evolve a certain pokemon, Eevee, into Leafeon.
Rock Climb is not a move in the game. It wasn't a move until Diamond/Pearl/Platinum, which came out after FireRed.
You need the move rock smash
In Pokemon diamond, pearl, and platinum rock climb is found on route 217. (SEARCH EVERYWHERE)
chingling can't learn any hms.
you use the move rock climb, but u have to beat the gym leader candice
what smash isn't a move but if you meant rock smash you get it from roark in the mining place at orebough sorry spelt wrong
have it hold king's rock them trade it to another Pokemon platinum..
you can get a rock climb TM (i forget where) and teach it to an able pokemon.
The route east from Veilstone city. TIP: bring Defog and Rock Climb!
A damp rock is a hold item that extends the move rain dance used by the older from 4 turns to 8 turns instead.