For 10 points, name this island, split between Brunei, Malaysia, and Indonesia.
The Kapuas River is the longest river on this island, the site of Gunung Mulu National Park. Its province of East Kalimantan contains the cities of Samarinda and Balikpapan. This island's Crocker Range contains its highest point, Mount(*) Kinabalu. One country owns the provinces of Sabah and Sarawak on this island. This island lies across the Makassar Strait from Sulawesi and is directly north of Java. A small principality on this island has its capital at Bandar Seri Begawan.  For 10 points, name this island, split between Brunei, Malaysia, and Indonesia.
The Kapuas River is the longest river on this island, the site of Gunung Mulu National Park.
{Borneo}