You need to have the Blue Orb. After you defeat Red at Mt. Silver, go see Professor Oak at his lab in Pallet Town. He will give you one of the three Kanto starters. Then go see Mr. Pokemon. He will give you the Blue Orb then the guard should let you pass. Oh, and you also need the National Dex.
Embedded Tower.
You can catch it at Embedded Tower if you have a Blue Orb.
First you have to catch kyogre and trade groudon to heartgold then go to the embedded tower and there is rayquaza
Embedded Tower after catching both Kyogre and Groudon there.
you can only get it in soulsilver (and there it is at embedded tower and you need a red orb)
Kyogre is in Embedded Tower.
You can't
You can't. You must trade Kyogre over from Heartgold.
You can get groudon in Pokemon soulsilver and kygore in Pokemon heartgold (both are found in the embedded tower on route 47).
If you have Pokemon heartgold, you cannot get groundon unless you trade with someone who caught a groundon on soul silver. PS- It has to be from the embedded tower, any migrated groundon will not work.
lugia-whirlwind island ho-oh-bell tower sucuine-route 25 entei and rakoi-roaming latios-roaming(soulsilver)or pewter city from dewdrop item(heartgold) latias-roaming(heartgold)or pewter city with the dewdrop item from the mystery event(soulsilver) groundon-embedded tower(soulsilver) kyroge-embedded tower(heartgold) rayquaza-embedded tower must have a groundon and kyroge If you have any other questions go to serebii.net
no. it must be caught at the embedded tower in Pokemon soulsilver and then traded into Pokemon heartgold.