When viewing ancient Egyptian monuments, one encounters a motif that, in various forms, permeates all areas of life, from the landscape to the afterlife. Yet, it has not received the attention it deserves in travel books or the extensive literature on Egypt. In pharaonic times, it was referred to as Sema tawy, the "Union of the Two Lands." Bruno Sandkühler has been exploring this topic for years and now presents his findings with abundant visual material. He delves into the different layers of meaning and also evaluates previous individual research in Egyptology. This provides the reader with a comprehensive insight into the essential foundations of the ancient Egyptian worldview.