Molten Temple is a 3v3 map created for the 2016 season 3 ladder of Legacy of the Void. It continues to be used in the current map pool.
Official Map Description[]
Narrow ramps allow for strong defenses in the early game, but clearing out the Destructible Rocks opens up a much wider path to your base.
References[]
Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Molten Temple (in English). 2016.