When you are on the outside of Mt.Cornet climb up the first set of rocks and go through the door on the left.Then up the waterfall through the door you will find two poke ball things collect them then go to Sandgem talk to Lucas he will tell you something about Celestic go do what he said. Then go back to Lucas and he will tell about Pokemon at the spear pillar when you are at the spear pillar you will see the Pokemon catch him the go back through the door you came in turn around and go back to the spear pillar and there is the other Pokemon.
Hope this helped!
Yes.
It sure is
== ==
In Diamond and Platinum, Dialga is in Spear Pillar. If you want to get Dialga in Pearl, trade Dialga from Diamond.
If you beat Dialga and Dialga faints, you can no longer catch it.
No you cannot. You can only catch Dialga in Pokemon diamond and platinum. Although you can only catch palkia in pearl and platinum.
it's impossible, and I have action replay
Palkia and Dialga are not in Platinum. You have to trade them from Diamond and Pearl.
No.
At spear pillar.
After Palkia you get Dialga
yes