Sangiang Island

Sangiang Island (Pulau Sangiang) is an uninhabited coastal island in the Sunda Strait, administratively part of Bojonegara District, Serang Regency, Banten, about 10 km off the northwest coast of Java. Known for its white-sand beaches, clear waters and coral reefs, the island is a protected nature tourism area offering snorkeling, diving and trekking. It features a historic Dutch lighthouse and remains largely undeveloped, attracting day-trip and camping visitors from Anyer and Cikoneng.

Visitors can expect an undeveloped natural island with white-sand beaches, clear turquoise water, coral reefs and forested interior hills. Access is only by chartered boat from Anyer or Cikoneng harbor (45-60 minutes). Areas to explore include beaches on the north and east coasts, snorkeling and diving spots with coral, trekking trails to the interior and to the historic lighthouse viewpoint. Facilities are very basic with shelters, toilets and camping grounds. The environment is quiet and natural, suitable for beach activities, snorkeling, photography and overnight camping.

The island hosts a historic lighthouse built during the Dutch colonial period to guide vessels through the busy Sunda Strait maritime route between Java and Sumatra. Historically charted by British navigators as Thwart-the-Way Island, it served as an important navigational marker for ships entering the strait.

Valued locally as a protected nature tourism and marine conservation area in Banten, with surrounding waters traditionally used by local fishing communities. The island is managed for low-impact nature tourism and conservation.