At least two distinct Middle-earth forests are named Mirkwood in Tolkien's legendarium. One is in the First Age, when the highlands of Dorthonion north of Beleriand became known as Mirkwood after falling under Morgoth's control. The more famous Mirkwood was in Wilderland, east of the river Anduin. It had acquired the name Mirkwood after it fell under the influence of the Necromancer; before that it had been known as Greenwood the Great. This Mirkwood features significantly in The Hobbit and in the film .