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What route do you take through Mount Coronet to find Palkia or Dialga?
You will find Dialga and Palkia at the spear pillar. You would have battled team galactic there. Once your there go to the very end and there should be a vortex. For example Palkia could be in there...
dialga is in spear piller when you go through mt cornet. once you have captured dialga (blue thing that you see) walk back in the cave. when you come back to spear piller palkia will be there