|Rare Candy||Rock Smash Required|
The Ruins of Alph are located in Johto, with entrances to the south and west of Violet City. The ruins are filled with Unown once slide puzzles have been activated. Their name may come from the first four letters of "alphabet", which the Unown inside can represent.
If a Trainer listens to the Pokégear radio while inside the ruins, they will hear strange noises generated on every channel. Some of those noises are actually Ho-Oh's distorted cries.
There are several scientists in the area listening and studying the ruins to discover more about them. They say it is more than it seems and that the puzzles in the caves must have something to do with the mystery of the past of the Ruins of Alph. In the area there are several small caves with puzzles; solving the puzzles cause Unown to appear in the main ruins.
Patterns appear on the walls of the puzzle chambers. When the patterns' directions are followed, doorways to hidden rooms appear, and the player can learn some of the history of the Unown.
In the northernmost chamber, the far wall reads escape upon inspection. Using an Escape Rope there opens a secret room upon re-entering. Inside this room are four items.
In the chamber to the south across a small lake and to the right, the far wall reads flash. Getting a Pokémon to use the field move Flash will open the secret room containing more items.
The third chamber is accessed through Union Cave but requires a boulder to be moved. The far wall reads water this time. The secret chamber will open if the player has a Water Stone in their inventory (the player is required to select "use" in order for the chamber to open).
The final chamber is also accessed through Union Cave. It is the cave just left of the third chamber. The far wall reads Ho-Oh. If Ho-Oh is in the player's party, the secret chamber opens containing more items.
Inside the caves, you'll fight various Unown, but only them, outside is treated like any other area.