Rucsui Mountiains

The Rucsui Mountains are tall mountains boundary the kingdom of Pacellum and the unknown world. It is to the north of Sentalung and is littered is myth and legend. The mountains are treacherous and considered inhabitable because of the extreme weather conditions.

Only 30 miles (work on distance) up the mountain, no matter what season it is, the weather will become frigid and harsh. The shift is sudden so most people if not prepared will go into shock with the temperature. Those that do manage to survive the harsh change, will have to trek through steep untraveled terrain that is covered in ice and snow. Once they reach the cloud level, the whole mountain is shrouded in darkness which is why the mountains are believed to be the home of the Forsaken.
Only one person has managed to survive the mountains harsh conditions and they are the only reason people know what the mountains are like. This person lived during the time of the Red King and their account of the mountains are the most cherished and preserved documents of that time. 
All who set foot on the mountain are seeking death or the favor of the Forsaken god. The myth of The Soulless Mountains serves as a warning to all that the mountain is the home of this Shuch and all who set foot on the mountain is offering their souls to the fallen god and are forever cursed to wander Rucsui for eternity. This story is true for the single survivor. After they returned, it is said they were never themselves again and were often caught staring at the mountains. One day, many years after their return, they vanished and many people believe they returned to the mountain because their stolen soul was calling to them.