Acuilty Lakefront and Snowpoint City

So, I assume that you've obtained the sixth badge in Canalave City, and Rowan assigned you to Lake Valor? You need to visit Lake Valor and beat the commander there, and then you need to go to Lake Verity and help Dawn/Lukas beat the commander there. Now, you need to go through Mt. Coronet, which is what you need help on (I mentioned visiting the lakes because if you haven't, Mt. Coronet will turn out to be a dead end.) Start at Celestic Town or Fortree City (I would reccomend Celestic Town), and go in the Mt. Coronet entrance from there. Go north (using strength) and go down the stairs. Just follow the path, and you'll eventually be on Route 216. It's snowing on Route 216 (heal up in the house, if you want). Go through Route 216 into Route 217; be careful, it's literally a blizzard and is a little hard to see any items or trainers! Be cautious of where you walk, and be sure to visit the most western house and pick up HM08 Rock Climb near the house. Continue north and go through Acuity Lakefront. Continue into Snowpoint City, as Lake Acuity is blocked. Obtain the seventh badge, and then go BACK to Lake Acuity, as you will now have access to it. You go in to watch your rival lose to the commander there. Now that you're done here, fly to Veilstone to continue more of the storyline. I'll leave the rest up to you...

Okay go to celestic town and go to mount cornet then ahead you see a boulder use strength then in front there is a pathway and that will lead you to route 216 and then snow point city is along there! Oh you need defog!