well i recall that it should be near snowpoint city route to get there near the house =)
HM STRENGTH HM STRENGTH
HM "Strength" is used to move boulders.
By using the HM Strength.
By using the HM Strength you can move boulder's
A Pokémon needs the HM move of Strength in order to move the big boulders. You can find the Strength HM in the Rusturf Tunnel.
you get the HM strength
the hm move strength is found in the cave Rusturf tunnel
Use the HM move Strength.
you mest get the hm strength.
With the HM move strength.
by using the hm strength
hm strength or hm rock smash