From Bulbapedia, the community-driven Pokémon encyclopedia.
Cape Brink is a short, straightforward walk up a mountain on Boon Island to the house of one of the many move tutors in FireRed and LeafGreen. This tutor, however, is different from others.
Leaving Two Island City by way of an uphill path in its northeast corner, Cape Brink's path quickly turns to the west, leading trainers around a small lake. From here, it goes up the mountain's path, passing through quite a bit of long grass on the way. The only thing at the top of this semi-isolated mountain is a very peculiar woman's house. However, this is a very important place, as it allows trainers the chance to teach their Starter Pokémon a move otherwise unavailable- either Frenzy Plant, Blast Burn, or Hydro Cannon, depending on which Pokémon was chosen in Pallet Town. Each of these moves, more of an elemental Hyper Beam than anything, is, as the tutor says, the most powerful move of its type.
After the trainer has finished their business on Cape Brink's northern end, they can take an express path back down the mountain using Surf to travel down a waterfall and back to the plateau just north of Two Island.
- Rare Candy (Itemfinder behind move tutor's house)
- PP Max (Itemfinder on piece of land jutting out near waterfall)