Shinigami realm

Death Note: How to Read 13 describes the Shinigami Realm as a "barren," "dry," and "desolate land." The realm includes different landscapes and does not have human-like buildings. Shinigami tend to congregate in areas with bones and stones. The realm also includes deserts with various holes. The holes, littered about the surface, allow them to view the human world in order to take human lives without traveling to the human world. How to Read 13 states that the date of the creation of the holes is not known.