You have to defeat all the gym leaders
There is a map of Mt. Coronet in the Sinnoh region.
in Pokemon diamond
Mt coronet is only in diamond or pearl or platinum not in firered.
If you're playing Diamond, the Pokemon in Mt. Coronet should be Dialga. You have to get the 7th badge before you are able to get to the top of Mt. Coronet where Dialga is though.
its in mt coronet, in the top very near the place where you may catch dialga
atop mt coronet is dialga in diamond, palkia in pearl, or both and giratina in platinum.
mt coronet
no where cause there gone to a different place
You find absol at mt coronet at one of the snowy parts.
(very rare) its in the snowy bit of mt coronet
Mt. Coronet is in Pokemon Diamond, Pearl and Platinum, not Ruby, Sapphire and Emerald. You must be thinking about Mt. Pyre.
He's in the Galactic Veilstone Building, and on top of Mt. Coronet. But not after he leaves Mt. Coronet.