The formal term for Lower Egypt’s Red Crown and the desert Red Land on each side of Kemet (Black Land), the fertile Nile river basin, was Deshret. The Pschent (Double Crown), also known as the sekhemti in ancient Egyptian, is formed when the Hedjet (White Crown) of Upper Egypt is joined with it.
The Red Crown was subsequently adopted as the vertical letter “n” in Egyptian hieroglyphs. The symbol portraying ripples of water was the original “n” hieroglyph from the Predynastic Period and the Old Kingdom.