Avilatan was an island on the planet Ord Mantell. It was a volcanic island, with several lava pools existing on it. Considered the birthplace of the Mantellian Separatist Movement, Avilatan was a contested island during the Cold War. Several key locations on Avilatan during the Separatist War included the Republic's base of operations, Fort Garnik, and the Separatists base of operations, Mount Avilatan, which contained the Separatist Stronghold inside it.