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You cannot walk through them, but you can go around them. There is a Action Replay code to go through the trees, houses, etc. however.
Pokemon Diamond:
94000130 FCFD0200
12056C06 00002000
D2000000 00000000
94000130 FCFD0100
12056C06 00001C20
D2000000 00000000
Press R+B to activate the cheat and press L+B to deactivate it.
What else can I help you with?
Where do you go underground in Pokemon diamond version?
anywhere except caves, houses, buildings, ruins, and islands
Where do you get Sandshrew in Pokemon Diamond?
In the caves.
How do you get through the caves to the Pokemon league in Pokemon diamond?
You could either search around forever, or you should look it up on youtube
Where can you find wiscash in Pokemon diamond?
in caves that have a pond in them
Where can you find igglypuff on Pokemon diamond?
you can find them in caves
Where can you get a Pokemon in diamond?
they're in the grass, water, and in rocks and caves
Pokemon Diamond where are all Pokémon?
in the grass, caves, and water.
Where is luneon in Pokemon diamond?
espion is in places like graves and caves...
Where can you find duskull in Pokemon Diamond?
in one of the three caves on map two
How do you catch lapris in Pokemon Diamond?
go to route 224 . it is in the caves little pond.
What are some places that you can get rare candies on Pokemon diamond or pearl?
in caves on route 207
What do you do after you free the 3 legendary Pokemon in diamond version?
You go to the three caves and catch them.
