When you get to Sunny Shore City, beat the gym leader if you haven't. After that, go to the part of town to the left that is surrounded by water except for the south part and doesn't have anything on it. A person should come and give you the hidden machine waterfall. Teach it to one of your pokemon. Use surf to go in the water. Keep going north until you find a waterfall. Use waterfall and keep going north. You will find a second waterfall. Go past it. Eventually you will find a building. Go in it. It has a shop, you can heal your pokemon, and there will be a doorway being guarded by a person. Talk to the person, and if you have all eight badges, he will let you through. Inside you will fight the Elite Four, and a Champion.
The elite four is located close to sunyshore city. At the top of sunyshore city there is a beach with a girl standing on it. Go to the water and use surf! If you surf for a while in a northern direction ( with the compensation of several twists) you should appear underneath the elite four. There is a cave that you must venture through ( maake sure to bring pokemon with strength, rock smash, surf and waterfall. After your out of the cave, surf on the water and use waterfall on the waterfall and you should be right infront of the elite four!!!
You go up from sunny shore and you come to a place healing is recommended then go through victory road which is easy if you find a guide to walk you through.
Well first you have to beat all the gym leaders and then you have to use surf at Sunny shore City and then that is pretty much it but you have to go up a little more
I don't know how to get through the victory road. I'm pretty sure I'm supposed to go through it and at the end there is this guy blocking my way. He says, " let me size you up...You need to aim high. You should be thinking about the Pokemon League." He wont let me pass.
Go to the crack
1. You need to go to victory road 2.you are there 3. Hope this helps