It's basically a long mountain trail. There's not much trees nearby, and the Pokemon are mostly Rock-type, with a feel Steel-types. The trail is harsh, so be careful not to trip, and beware of landslides!
There is a PokeMart and PokeCenter at the start of the trail.
At the end of the trail, at the other base of the mountain, is the Rockland Gym! (See more information in gym topic.)