The Rakata and the Unknown World was a book written and published by the Dark Lord of the Sith Darth Revan sometime during the Jedi Civil War. In the book, Revan focused on the ancient Rakata species and their homeworld, known then as the Unknown World. Three millennia later, during the New Sith Wars, the book was one of the texts kept in the archives of the Sith Academy on the planet Korriban. The volume was studied by the Sith student Bane, who read the book extensively.