Ap Chau

Ap Chau (Chinese: 鴨洲; Jyutping: aap3 zau1; literally "Duck Island"), also known as Robinson Island in English, is a small uninhabited island in Hong Kong. It is located in Sha Tau Kok Hoi (also known as Starling Inlet) in the northeastern New Territories, near the border with mainland China.

Ap Chau is known for its distinctive reddish-brown cliffs and rock formations, composed primarily of ferruginous sandstone. These rocks are particularly noticeable along the island's coast, creating a striking visual contrast with the surrounding turquoise waters. The island's unique geological features have made it a popular destination for geological studies and nature enthusiasts.

Historically, Ap Chau was inhabited by Hakka fishermen. The remains of a small village can still be found on the island, providing a glimpse into its past. The island's population dwindled throughout the 20th century, and it is now uninhabited.

Ap Chau is part of the Hong Kong UNESCO Global Geopark, specifically the Northeast New Territories Sedimentary Rock Region. Access to the island is typically by boat, often as part of organized tours or private charters. Visitors are cautioned to respect the fragile ecosystem and geological formations of the island.