Ruins of Alph

The Ruins of Alph are located in Johto near Violet City, with entrances to the south of Route 36 and west of Route 32. The ruins are filled with Unown once any of the four slide puzzles inside the chambers have been activated. If the player listens to the Pokégear radio while near or inside the ruins, they will hear strange noises known as Mysterious Transmission on channel 13.5. In Pokémon HeartGold and SoulSilver, the player must be inside one of the chambers, and tuning the radio near the center will broadcast these noises. Having the transmission on in Generation IV forces the Unown encountered half the time be a shape the player has not yet caught.