Actually scrap that,you need the old sea map to get there but you have to trade it with someone who has the old sea map on Pokemon ruby/sapphire
The Old Sea Map was an event item that allowed you to access Faraway Island where Mew resides.
Nowhere.Old sea map is only gift for you.I hear this.
Only by a Nintendo event.
Mix records or go to a Nintendo event
What_is_the_AR_code_for_the_old_sea_map_or_chart_in_pokemon_platinum
Nintendo events
Old Sea Charter?First of all it's called the old sea map. you need to go to a Nintendo event
Answer:It was distributed during the Pokémon Fiesta event in 2005 in Japan, but unavailable to international players (without cheating)
when you have the map talk to the ferry lady and shell take you to the island were you get Mew
Use action replay DS for Pokemon Diamond
it is 692P66 PP296P 55LO33 22RR66