Third Age

Third Age (III) refers to the time period during the Lord of the Rings, when the Fellowship of the Ring go forth on their journey to destroy the ring and save the world from Sauron. Once this task is complete they begin a new age.

The Third Age begins with many memorable events in Year 2: Isildur plants a seedling of Nimloth, the White Tree, in Minas Anor; the Battle of the Gladden Fields where the One Ring is lost in Anduin. The Third Age covers 3021 full years and ends with the Ring-bearers departing to the Grey Havens. — [1]