During the events of the War of the Ring as depicted in the "Lord of the Rings", Thranduil does what he can to aid his allies, including holding the creature Gollum in his dungeons for interrogation by Gandalf on the history of the One Ring. Gollum later escapes with the aid of Orcs who attack Thranduil's realm, and Legolas is sent to Rivendell to seek the counsel of Elrond and Gandalf. Thranduil and his people withstood attacks by Sauron's forces during northern battles of the war. Having routed their foes in the north, Thranduil's forces moved south, and joined with the armies of Lorien under Celeborn and Galadriel in destroying Dol Guldur, cleansing Mirkwood of Sauron's taint of evil. In the aftermath, Thranduil, along with Celeborn, renamed Mirkwood "Eryn Lasgalen", The Wood of Greenleaves. Thranduil's realm expands after the wars, and he and his people enjoyed peace.