In Soul Silver after getting your Hoenn starter from Steven Stone you go to Mr. Pokemon and get a red orb, then you can catch Goudon, In Heart Gold you get a blue orb to catch Kyogre, get the other one from the two Pokemon I mentioned from HG or SS to catch Rayquaza. Hope this helped.:)
no we don't need waterfall to get to embedded tower
Kyogre is in Embedded Tower.
no
the embedded tower
Route 47. .
Import from Sapphire or emerald, trade from heart gold. If you Have the groudon from the embedded tower in soul silver and the kyogre from the embedded tower in heart gold, you can take them both to professor oak. He will give you the jade orb, which you can take to the embedded tower to catch rayquaza. Both groudon and kyogre MUST be from the embedded tower, or it will not work
Get the Kyogre you caught at the Embedded Tower, and trade a Groudon from Soulsilver. (Note: They cannot be transfered from RSE, they have to be from the Embedded Tower!!) Then, bring both of them in your party to Oak, then he'll give you a Jade Orb. Rayquaza will be at the Embedded Tower.
The Embedded Tower is on Route 47, between Cianwood City and the Safari Zone. It becomes unlocked if you have the Blue Orb.
Embedded tower. However, it's not as simple as that. First you need to catch Kyogre at the Embedded tower (Groudon in SoulSilver). Then you need to trade for a Groudon that was caught at the Embedded Tower (trade for Kyogre in SoulSilver). After showing both of these to Professor Oak then you get the Jade Orb. Next time you go to the Embedded tower, Rayquaza will be waiting.
Embedded Tower.
The Embedded Tower.
Kyogre is located in The Embedded tower, or hidden tower.