Tarakan
Tarakan is an island off the northeastern coast of Borneo, near the mouths of the rivers that drain the island's interior. It was a center of a Tidung kingdom, one of several river and island polities in the region. Tidung traditions associate the island's name with an early ruler, I-Tara'. Its shores faced the sea routes linking the river mouths of Borneo with the Sulu archipelago.