The Book of the Earth (Arabic: كتاب الارض, romanized: Kitab al-Arid) is an Ancient Egyptian funerary text that has been called many names such as The Creation of the Sun Disk and the Book of Aker. The Book primarily appears on the tombs of Merneptah, Twosret, Ramesses III, Ramesses VI, and Ramesses VII and serves as a counterpart to the Book of Caverns. The central figures in the story are Osiris, Ra and Ba, while the overarching plot is the journey the sun takes through the earth god, Aker. Source: Wikipedia (en)