If you got both Kyogre and Groudon, take them to Mr. Pokemon and he'll give you a Jade Orb. You'll, then, need to return to Embedded Tower.
I don't know what cave you are talking about, but here is an example of a cave: DARK CAVE. I hope this helped!
The black flute can be found in Dark Cave in Soulsiver.
The same place as gold heart. In the back of a secret cave your mom tells you about.
in the rock cave or in the grassy areas
In what game? In Ruby, Groudon is n Cave of Origin, before Rayquaza In Sapphire, Kyogre replaces Groudon. In Emerald, Groudon is in Terra Cave and Kyogre, Marine Cave.
Yes, Just catch Groundon and ask a freind to trade u kyrogre and show them to oak and he will give you the jade orb to catch Raquakwaza
Beat Elite 4 Go to Pacificdilog Town Surf east and then up and you will find a cave entrance, rayquaza is at the top, the cave has lots of Lv 50-60 Wild Pokemon and the puzzle to get to Rayquaza is difficult and without a MasterBall Lv70 Rayquaza is very difficult to catch
after you beat rayquaza it automatically appears
it is in a cave next to pacific lodge town
you should be able to go there when you beat the game by beating rayquaza
talk to wallece and tell her the location of rayquaza i.e sky pillar
you catch it when you enter the cave of origin. if our passed that then youu can no longer catch him