The island was nicknamed the "General's Hat" (將軍帽) by Chinese seamen hundreds of years ago.

The island is located about 20 nautical miles (37 km) southeast of Mersing Town, on the east coast of Johor mainland.

The island rises up to 600 meters above sea level at a peak named Mount Semundu.

It has fresh waters, fruits, rattan, timber and a sheltered harbour and coral reefs which abound with prolific marine life.

The island mostly consists of pyroclastic rock with up to 5 mm diameter in size.