The Silimarillion is an extensive narrative that is divided into five parts and provides information on the Universe of Ea. Summary Of The Book Written by one of the most iconic writers of mythopoeia, The Silmarillion is a classic collection of five of the works of Tolkien Sr. This narrative is rather extensive, even though it is incomplete. Valinor, Numenor, Beleriand, and Middle Earth are the places which are included in this universe. The five works that are included in this collection are Ainulindale, Valaquenta, Quenta Silmarillion, Akallabeth, and Of the Rings of Power and the Third Age.