Iron Ruins (Sinnoh)

The Iron Ruins is a special room in Iron Island. The extra cave is by the exit. If the player heads to the cave with Regigigas in the player's party. Then, the player will access a new cave instead of the empty one with a Metal Coat. Here, the player needs to confront the statue and then step on the dot pattern on the floor, then walk up to the statue, Registeel will attack, it is at level 30.