Moving water in general and waterfalls in particular, which often provoke strong sensory experiences and emotions, represent manifestations of power and entrances to otherworldly realms. Although these phenomena are natural in nature, they are also unnatural compared to other phenomena and hence ‘supernatural’. The unnatural natural differentiates the world and separates places with divine powers from places without powers. It also determines how and where humans may gain access to these supernatural forces. Such divine spheres and flows of cosmos are illustrated by discussion of three waterfalls along the Nile and of prehistoric Scandinavian water-worlds and waterfalls.