Rossak is the fifth planet of Alces Minor. It is a bitter barren glacier was populated by speakers of Indi. The growing season was exceptionally short, and many plants that grow vigorously were poisonous. There the Zensunni ancestors of the Fremen were exiled in 6049 AG; the poisonous environment created the first Reverend Mother; Circumstantial evidence from the Imperial Records about Rossak implies that the BG's Missionaria Protectiva and Panoplia Propheticus apparatus was grafted to the Zensunni heritage there. It was also a place where the Zensunni decided to coexist with other inhabitants.