Wang Chau is an island of Hong Kong. Administratively, it is part of Sai Kung District.
Together with Basalt Island and Bluff Island, it forms the Ung Kong Group [1] and is part of Hong Kong Global Geopark.
The Ung Kong Group Special Area covers 176.8 hectares and was designated in 2011.[2] It consists of Basalt Island, Bluff Island, Wang Chau, their surrounding islets, and Kam Chung Ngam in the southern part of Jin Island.[3] The geology of the area is characterised by volcanic rocks of the Cretaceous periods.[4]