(bôr'nēō´´), island (1990 pop. 9,102,906), c.287,000 sq mi (743,330 sq km), largest of the Malay Archipelago and third largest island in the world, SW of the Philippines and N of Java. Indonesian Borneo (called Kalimantan by the Indonesians and divided into several provinces) covers over 70% of the total area, and the Malaysian states of Sabah and Sarawak and the sultanate of Brunei stretch across the north coast. The island largely consists of dense jungle and mountains, reaching its highest point at Mt. Kinabalu (13,455 ft/4,101 m) in Sabah. Much of the terrain is virtually impassable, and large areas are unexplored. Many of the rivers are navigable to small craft, however, and provide access into the interior. The largest rivers are the Kapuas in the west and the Barito in the south. The coastal area is generally swampy and fringed with mangrove forests. Banjarmasin, Pontianak, Balikpapan, Tarakan, Kuching, Bandar Seri Begawan, and Sandakan are leading ports. The climate is…