Dark Crag

Dark Crag (影洞 Kage Hora, lit. Shadow Cave) is a cave located in western Hora on Route 6. It possesses two other exits, one on Route 7 and one on Route 8. This is not counting the first entrance on Route 6.

Geography
The Dark Crag is just as the name suggests; the cave possesses very little light and is very easy to lose track of oneself inside, which is why or another source is light is needed to light the path. The cave itself has few floors and connectors. When a beginning trainer reaches the cave, and lights it up, it's very simple design. The entrance and the two exits are generally the only way to get out. When a trainer obtains the HM however, they can navigate deeper into the cave. There are three "stairways" which lead to different locations. Each of these floors must once again be lit by Flash. The first choice leads the Trainer down into a floor with a glistening lake, fittingly called Sparkling Lake (赫然貯水池 Kakuzen Chosuichi, lit. Sparkling Reservoir), where Water-type Pokémon can be captured. If the Trainer uses, they reach an underwater cavern where rare Water-type Pokémon normally thought extinct can be found.

The second choice leads the Trainer down into a dead end, though lost items are often found here.

The third and final choice leads the trainer down into another cave floor. This floor is like a maze, that requires Strength to navigate. One the Trainer reaches the end of the maze, they find a secret passageway which leads them out the way they came.

In the cave

 * Geodude
 * Graveler
 * Onix
 * Steelix (rare)
 * Kibago
 * Onondo
 * Gible
 * Gabite
 * Beldum
 * Magneton
 * Lunatone
 * Solrock

In the lake

 * Magikarp
 * Feebas
 * Finneon
 * Chinchou
 * Goldeen
 * Seaking (uncommon)
 * Poliwag
 * Lotad

In the cavern

 * Kabuto
 * Omanyte
 * Anorith
 * Lileep
 * Purotoga
 * Dratini

Trivia

 * Deeper inside the Dark Crag are boulders which emit a special magnetic field. As a result, Magneton and Nosepass can only be evolved into Magnezone and Probopass, respectively, by leveling them up here.