Riot Games has revealed its newest map for League of Legends, which will officially be added to the closed beta tomorrow, Oct. 20. Twisted Treeline is best suited for 3v3 action with its layout of two lanes and two forests. You can view screenshots of the map in our gallery and read the full profile for the map after the jump.

The pre-season for League of Legends will begin on Oct. 27, which is when the game will become available in retail stores and fully open online. The game will be operated in seasons, which is why the team feels it makes sense to have a pre-season period so players can learn the game and build relationships. The first season will begin in the first half of 2010.

The Field of Justice known as the Twisted Treeline is one of the League’s newest arenas, and as such, still quite the mystery to most of the League’s competitors.  The arena itself is located north of the Ironspike Mountains in a large expanse of forest nestled between the city-state of Zaun and one of the major passes that connect Noxus with the northern reaches of Valoran.   It is one of the few remaining forests near Zaun that has not been exploited for natural resources; a mere cursory glance at the geography of the arena quickly explains why.  The misuse of magic – mainly from Zaun but also from the numerous battles fought here during the various Rune Wars – has warped the verdant environs of the Twisted Treeline into terrain with a bizarre, alien-like visage.  The two nexuses that power the Twisted Treeline do more to try and maintain the physical stability of the region more than any other function they would normally perform.

Twisted Treeline map features faster paced 3v3 action due to its two lanes/ two forests layout. One lane is curvy, and the other is straight. The map also features several neutral monster camps, and plenty of opportunities for team fights due to the two large forests located on the map. The top forest is accessible only from the top lane, has high reward monsters, and is structured to increase random forest encounters. The lower forest narrows in the middle, allowing for increased ganking opportunities. Other features of Twisted Treeline include new Sigil monsters, in addition to a new monster whose buff reveals the bottom forest for a short period of time.