Mt. Shuem

Mountain located between Enermy Town and Route 411 / Groment City. You can go through the pass under the mountain if you have a pokémon that can use Lava Surf. You can get this TM from the person on the east-side of Marfeny Lake (directly east of Enermy Town). The wild pokémon in Mt. Shuem are mostly fire-types with an occassion Zubat/Golbat. In the deeper levels you can also find Ground-types.

Near the entrance to Route 411 you can use Rock Climb to get to higher levels of Mt. Shuem.

Inside the mountain, near the beginning, there is a guy who will give you a Sky Fossil. You can get the museum scientist in Groment City to turn this into an Archen for you.