Mario and the seven stars help

ok so in the game, i reached boosdters tower and got bowser and blah and so forth, but, hihg in the tower, i reached one of those exclamation point button things. I jumped on it and it said, "check out boosters pass". I found nothing. I then went back to moleville and talked to a mole who said "Have you seen that huge hole in the cliff at boosters pass? Strange huh?" i cant find any huge hole in the cliff. Also, two rooms after the exclamation button, theres blue platforms and organge platforms. I can get to one orange platform, but not the other one which i need to get to to advance, please help, email if you want:Bksontape@yahoo.com