Beyond the Clans' territories lies a mountain range, inhabited by the Tribe of Rushing Water (often referred to simply as the Tribe), a group of cats who follow a different set of ancestors: the Tribe of Endless Hunting. The Tribe has a different hierarchical structure than the Clans, consisting of a Healer, cave-guards, and prey-hunters, who each serve a different function in the Tribe. The Healer leads the Tribe, heals the ill and wounded, and communicates with the Tribe of Endless Hunting; the cave-guards defend the Tribe and the prey-hunters hunt for the Tribe. In a subsequent prequel series, it is revealed that the Tribe was formed by the predecessors of the Clans when they left the lake territory to live in the mountains. In turn, cats from the Tribe later moved to the forest of the original series and formed the Clans.