Pokemon diamond and ?

Question

what city or route has the spear pillar where you catch dialga?

Answer 1

the spear pillar is at the peak of mount coronet

you will need strength rock smash rock climb and surf to get through

tbh the path is pretty linear you shouldnt get lost apart from the snow it, you might wanna get a guide for that

Answer 2

dude get it at the top of mount correnet fight the galactic boss and catch dialga don't wast that master ball good luck  

Answer 3

you go to mt. coronet in hearthome city or from orburgh city (not from entrna city or celestic town because entering mt. coronet from there leads to dead ends) and use rock climb to get to the top of spear pillar.

and fight dialga.

but only you can go to the top of mt. coronet if you release the three pokemon to the lakes from galectic headquarters.