Read the hint in the north chamber to identify the Pokémon and move the pieces into place. The floor gives way, dropping you into the main underground chamber where the first eleven forms of Unown, A through K, have awakened. Catch at least three different forms, and one of the scientists investigating the ruins will take you to the research building and upgrade your Pokédex so it can record the various Unown forms.
The Four Puzzles
A Pokémon that hid on the sea floor. Eyes on its back scanned the area.
HM03 and HM04 are required to reach the three other puzzles, and unlock the other Unown forms. In addition, the lone patch of grass is the only place to find wild Natu and Smeargle.
The encounter rate is divided among the forms that have been unlocked, ultimately looking like in table below. Due to the way the game generates Unown's letter, Unown Z will always be slightly less common than other letters.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
South of the ruins are two men standing near a hill. The first gives you a Miracle Seed, which boosts Grass-type attacks, while the man behind the cuttable tree hands out TM05 (Roar). Head south to reach a small inlet, and register Fisherman Ralph's phone number for alerts about Qwilfishswarms. Further south, a shady man offers a "tasty, nutritious SlowpokeTail" for only 1,000,000. Meet up with Frieda behind the Pokémon Center on a Friday to get a Poison Barb. Chat up the Fishing Guru inside to get the Old Rod, and rest up before entering Union Cave.
Union Cave, 1F
Union Cave is a small, three-floor cave on the south end of the peninsula. Seawater wells up from underground, preventing access to the deepest parts of the cave for now. The ground-level tunnel merely connects Route 32 and Route 33, but exploring the basement floors with Surf and Strength reveals two more exits that lead back to the Ruins of Alph. On the bottom floor, a wild Lapras appears once a week.
The ground-level tunnel is a fairly straightforward path. Wind your way back and forth until you see the ladder on the southwest platform, which lets you reach an X Defend and TM39 (Swift) on the floor below. Grab the Awakening at the south wall, and take the exit to Route 33.
Union Cave, B1F
Union Cave, B2F
Return with the HM moves Surf and Strength to finally explore the rest of the cave.
To reach the Ruins of Alph, climb the ladder on the southwest platform to B1F. Surf north to reach a fork in the road; the northern path leads to Puzzle #3, while the southern path, blocked by a boulder, leads to Puzzle #4.
To reach the bottom floor, surf across the pool of water in the southwest to reach a ladder. Swim across another pool on B1F, and take the next ladder to the north side of B2F. There's an Elixer in the northeast corner, and a Hyper Potion on the platform near Ace Trainer Nick. A Lapras appears in the south pool every Friday.
Azalea is a small, isolated town on the south end of the peninsula. Situated between Union Cave to the east and Ilex Forest to the west, the town does not get many visitors. The residents know that something's up when you tell them of shady people near the Slowpoke Well, and Kurt, the famous Apricorn craftsman, rushes off to help the oblivious Pokémon inside.
By the time you catch up with Kurt, he's already defeated the Rocket Grunt outside, but slipped while entering the well and landed on his back. As he is temporarily incapacitated, it's up to you to defeat the other four Rockets to save the Slowpoke.
Team Rocket disappears, and Kurt is mobile again. He takes you back to his house, and gives you a Lure Ball as thanks for saving the Slowpoke. Kurt knows more about Apricorns than anyone, and from this point on you can bring him any Apricorn to have it transformed into a custom Poké Ball by the next day. Apricorns come in seven different colors, each perfect for a specific type of Poké Ball.