BUTON Island has long been recognized as a natural asphalt producer. Information obtained from the solid bitumen exploration conducted by the Directorate of Inventory and Mineral Resources, Bandung, shows that asphalt is produced on Buton Island in many places like Lawele, Kabungka, Rongi, and Ereke areas.

Solid bitumen is sedimentary rock that contains high hydrocarbon substances. Hydrocarbon occurred as liquid or semi liquid that formed natur