Note: If you are going to try to catch Dialga or Palkia (diamond or pearl) make sure you have a bunch of Ultra and Dusk balls!! First, Fly to Hearthome city and head west, Route 208. Enter the cave and once inside, you should go north.When you first enter the cave, you need to head west to the opposite side. Once you reach the west entrance, head north and surf across the pond. Use rock climb to reach the stairs up. In the next room: Go- North, West, South, Upstairs, North, West over bridge, down stairs, up north, stairs,up stairs, cross bridge, down stairs, down stairs, upstairs and in cave door. In the Next room: Up stairs, up stairs Again Next room: up stairs, north, west, south, Out. Now you are outside. Follow the path and use rock climb when you get there. Now don't use rock climb again, instead, head west and through the grass until you reach another cave. Inside, use rock climb, follow the path, down the stairs then east, you're out of the cave. ...