Moss Rock

Moss Rock refers to a small rock located within the Hakutai Forest that allows your <a href = "/wiki/Eevee_%28Pok%C3%A9mon%29">Eevee</a> to evolve into <a href = "/wiki/Leafeon_%28Pok%C3%A9mon%29">Leafeon</a>. To get to Hakutai Forest, you can either take Rt. 205 or go down from <a href = "/wiki/Hakutai_City">Hakutai City</a>.

Once you're in Hakutai Forest, head all the way north till you reach a formation of trees that resemble a sideways L. Directly to the left of the trees is Moss Rock amid some grass. You must battle the wild Pokémon in the grass near the stone in order to evolve your Eevee. You only need to level up Eevee by one level; as soon as it grows to the next level, it will evolve.