cherry grove town i think. either that or ccherrygrove city...
no
Surf on the river in New Bark Town. The road's pretty straightforward from there.
well it depends on what Pokemon version you are playing like in soul silver and heart gold you need to use a good rod in new bark town or Cherrygrove city
Aliza town
in kanto go to new bark and go surfing and u will get there
Blackthorne city is not in Pokemon Diamond but in Pokemon Heart Gold/Soul Silver
it should be in olivine city
blackthorn city
In fuchsia city.
by being awesome
dodo
New Bark Town, just like Gold, Silver, and Crystal.