After you've beaten the 6th gym leader Byron, you'll have to go to Snowpoint City via Mt. Coronet. At this city you can find the 7th gym.
You need to get to the top of Mt Cornet, you will need all the Hm's except cut. You need to go into Mt Cornet through HeartHome, you need to go north in the cave and surf across till you see rocks you can climb. -Empol
well go to the elitte four- i don't understand your question is it " what do i do after i defeat the 8th gymleader in Pokemon pearl?"
you need to get the 7th gym badge. :)
Beat the 7th gym leader go to veilstone and go to the HQ and talk to the grunt and he drops the key
beat the 7th gym leader and then go to mt cornet he wiill not be there
When you beat the 7th gym leader and have seen everything at the lake you go to spear pillar at the top of MT. Cornet
mount cornet
After you've beaten the 6th gym leader Byron, you'll have to go to Snowpoint City via Mt. Coronet. At this city you can find the 7th gym.
candace the leader of snowpoint gym is the 7th leader
Catch one in Mt. Cornet. Um, that's about it. USE A DUSK BALL, OR IT WILL ESCAPE!
In Pokemon Diamond, you get Dialga before the 8th gym battle. After you beat the 7th gym, you battle at the peak of Mt. Cornet, Spear Tower, and battle, preferably catch Dialga, then you can access Sunyshore City. In pearl you battle Palkia.
Blaine.
You have to beat the gym leader then you face them. If u win they Will let you by
Beat the 7th gym leader which is near cinnabar island and talk to the 8th gym leader which is on cinnabar island and he is going to go back to the gym to wait for you to challenge him.
you go to the 7th gym leader (in the seafoam islands) and after yu beat him you go back to cinnabar island and blue will say you are ready to fight him p.s. the 7th gym leader is fire type
After you beat the 7th gym leader.