it won't open because you don't have the right thing to awaken it, Cyrus is the one who awakens palkia with the red chain from the the three legendary pokemons from the lakes you will anyway encounter it in you Pokemon pearl adventures after you obtain your seventh badge and head to mont cornet
You have to free the 3 legendaries.
Go to Spear Pillar, beat Team Galactic and capture Dialga/Palkia. Then the road to Sunnyshore is open.
When you receive it, go play Pokemon Pearl and go to the pokemart.
you go to mt coronet and surf acoss a lake(not the one that leads to spear pillar unless you want Palkia) and go to the poke' ball and open it. i dont remember so its probbally not accurate....
In both games, go to Mt Cornet near the first gym, use rock climb on one wall then go find Dialga in Diamond or Palkia in Pearl.
you have to have 2 or more pokemons and it has to be open. Its open in the day time
where is the exact location of the key to open the petalberg's gym in pokemon perla not on pearl?
you cant unless you have a regigigas
To turn on the power you must go to spear pillar which is on the top of mount coronet and save the 3 legendary Pokemon from the lakes then you must either catch or defeat dialga and the power will be turned back on.
Just head on back down to Spacial Rift once it's open to you again. Beat Palkia again, and you'll be able to recruit him right then and there.
Pal Park (open after you beat the main game)
you need azelf,uxie,mesprit to open the cave after beating the Pokemon league