How Do You Get Past The Cave Painting In Mt. Coronet In Pokemon Platinum?

Well, you only get past it whenever you beat Cyrus for the first time, release the the three lake pokemon, and beat the second to last gym leader in snowpoint city and go up to lake acuity. When you go back to the painting, 'Looker' will catch up to you and you and he find the cave painting on the ground, shattered.

Hope this helps ^_^

Beat th snowpoint gym and go up into mt coronet and go to second floor (surf, strength, rockclimb,and rock smash is needed) you will see the painting thingy is shattered looker will bla bla bla with you!