Bintan, is the largest among the 3,200 islands of Riau Archipelago and is located 10 kilometres (6.2 mi) east of the Batam Island. It has a coast line of 105 kilometres (65 mi) and has rolling topography in its landform. The Riau Islands are a province of Indonesia, which encompassed the Riau Archipelago, Natuna Islands, Anambas, and Lingga Islands; in July 2004 the islands of Riau were divided from the existing Riau Province to form the new province with its capital at Tanjung Pinang.