It was not until Christopher Tolkien published The Silmarillion after his father’s death that a fuller story could be told. Although much of the book’s content concerned the First Age of Middle-earth, there were at its close two key works that revealed the tumultuous events concerning the rise and fall of the island of Númenor. Raised out of the Great Sea and gifted to the Men of Middle-earth as a reward for aiding the angelic Valar and the Elves in the defeat and capture of the Dark Lord Morgoth, the kingdom became a seat of influence and wealth; but as the Númenóreans’ power increased, the seed of their downfall would inevitably be sown, culminating in the Last Alliance of Elves and Men.
Even greater insight into the Second Age would be revealed in subsequent publications, first in Unfinished Tales of Númenor and Middle-earth, then expanded upon in Christopher Tolkien’s magisterial twelve-volume The History of Middle-earth, in which he presented and discussed a wealth of further tales written by his father, many in draft form.