from the digger
Find a Pokemon that can learn Rock Smash. Like Geodude.
by getting rock smash from oreburgh gym leader
near Ravaged Path
you can use the hm strength you can smash rocks with rock smash
Rock smash silly.
ion djvfb Gui's
At the Mt. Coronet Range Entrance (right at the beginning), a hiker will talk to you and give you HM06 (Rock Smash).
You need to teach the HM strength to a pokemon.
Teach the HM Rock Smash to a Pokemon and interact with the rock. Round rocks need the move strength and not all Pokemon can use these moves.
its in the house in mauville city at the right of the shop.
cut fly surf defog rock smash rock climb waterfall and strength
Cut, surf, waterfall, rock climb, defog, fly, and rock smash.