Entwood, also known as Fangorn.
The Forest of Fangorn provided an important role in The Lord of the Rings novel as did Mirkwood and Lothlórien in the Third Age, a time when Sauron challenged Middle-earth to battle and domination. The forest provided the means by where adventure expanded with the breaking up of the Fellowship. Merry Brandybuck and Peregrin Took were the first to discover the Ents were alive but were dwindling in numbers due to the loss of the Entwives. They were lost because of the events of the Last Alliance of Elves and Men. The forest was again severely damaged during the War of the Ring by the forces of Saruman who lived close by in the fortress of Isengard.