<P> "Erebor", specifically the southern spurs of the Mountain and Dale, is a playable map in The Lord of the Rings: The Battle for Middle - earth II . It has three gates, including the one Tolkien described and two which cannot be closed, to allow those playing as invading forces to easily enter the stronghold . </P> <P> The Lonely Mountain appears in the Peter Jackson motion picture adaptations of The Hobbit: An Unexpected Journey, The Desolation of Smaug, and The Battle of the Five Armies . </P> <P> The International Astronomical Union names all mountains on Saturn's moon Titan after mountains in Tolkien's work . In 2012, they named a Titanean mountain "Erebor Mons" after the Lonely Mountain . </P>

What happened to the lonely mountain after the hobbit