Spear Pillar is located at the very top of Mt. Coronet. To get there you have to work your way upwards from one of the entrances to the mountain. Keep looking for staircases that go up and you will eventually find Spear Pillar.
spear pillar is only in Pokemon diamond, pearl, platinum
mount cornet at spear piller
if you go to spear piller and get to the distorstinion world
First you go to spear piller and then you go through a portal to the distortion world and that's where you'll find giratina the main platinum Pokemon.
you have to beat the game in order to catch them, so when you do, you can do what ever you want
you get the 2 orbs and then go to spear piller
at the spear piller.
if you have pearl, Palkia. Diamond, you get Diagla. Platinum, you get giratina
it isn't anywere
you have to get the adament orb for dialga and the lustrous orb for palkia and then go up to spear pillar and they are there but you have to get the national pokedex
go to mt. cornet and keep and going up (:
On the top of Mt. Cornet