In Aztec cosmology, the soul’s journey to the Underworld after death leaves them with four destinations: the Sacred Orchard of the Gods, the Place of Darkness, the Kingdom of the Sun, and a paradise called the Mansion of the Moon. The most common deaths end up on their way to Mictlán with its nine levels, crashing mountains and rushing rivers, and four years of struggle. This pantheon of gods and goddesses and the expanse of the 13 Heavens provides the cultural basis for the Day of the Dead customs and celebrations.