You're supposed to climb all mountains of Mt. Coronet to where you get to this hall-like area. Afterward, you find your rival and battle Team Galactic.
Yes you're allowed to go to the distortion world again, but you have to go through Turnback cave to find it.
No
Get Giratina in the Distortion World. The Distortion World is at Spear Pillar which is in Mt Coronet. You go here after you have beaten the 7 gym.
You just go to the Turnbackcave and go to the Distortion World and it will be there.
When You Go To Spear Pillar.
go to distortion world and go the wrong way
your supposed to go down a waterfall
Sorry, but you can't. If you really DO want to go there, you have to get Pokemon platinum.
go to spear pillar when you have 7 gym badges an go to the distortion world
If you mean distortion world the go to mount coronet's peak in Pokemon platinum
Well, first of all if you're playing Pokemon diamond then you can't even go to the distortion world. You can only do this in Pokemon platinum.
go to end of distortion world and talk to him