to smash lil' rocks in pokemon black, u need rock smash which u get from the battle girl right at the bend at the entrance to pinwheel forest.
HOPE IT HELPED:)
use an action replay to hack into the game and smash them.chances are they'll have a cheat for that.
HM06 Rock Smash
Get the HM Rock Smash
Find a Pokemon that can learn Rock Smash. Like Geodude.
a move in Pokemon to smash rocks so you can get past
you must HM rock smash.
in rocks you smash
You get the HM rock smash and teach it to one of your Pokemon. You get it on island 1.
You use the Rock Smash TM
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You need the move rock smash
by getting rock smash from oreburgh gym leader