Embedded Tower
From Bulbapedia, the community-driven Pokémon encyclopedia.
The Hidden Tower is an area in Pokémon HeartGold and SoulSilver. It's unlocked when the player is in possession of the Blue Orb in HeartGold and the Red Orb in SoulSilver. It's where Groudon, Kyogre and Rayquaza are found in these games. Not much other information is known about it yet.
