The Screeching Mountains surround the city of Dis, and get removed as the city expand. They are filled with dangerous animals, and most deaths in Dis happen from claiming the lands. People who run and hide in the mountains are assumed dead. The further away from the city a person is, the stranger and wilder the local fauna is. The screeching mountains have an endless barrage of dust and rusty wind, barren of life. What survives there survives on very little, or feeds on outcasts banished from the city itself sent to die.