High Island Reservoir East Dam
High Island Reservoir East Dam is located in the southeastern part of Sai Kung Peninsula within Sai Kung East Country Park, Hong Kong. The reservoir was constructed by building two massive dams at the eastern and western ends of the strait between High Island (Leung Shuen Wan Chau) and the Sai Kung Peninsula, effectively separating the sea channel in between. Opened in 1978, the reservoir covers a total area of 6.67 square kilometers and has helped alleviate Hong Kong's water shortage problems. The East Dam area is part of the Hong Kong UNESCO Global Geopark and features world-class geological wonders formed by a supervolcanic eruption 140 million years ago, including spectacular hexagonal rock columns, sea caves, and the iconic Po Pin Chau sea stack. The High Island Geo Trail near the East Dam offers an easy walking route with comprehensive facilities and interpretive signs explaining the reservoir's history and geological features. Visitors can admire the beautiful reservoir views, verdant mountains, impressive breakwater constructed with dolosse (anchor-shaped wave breakers), and the dramatic Po Pin Chau, which was originally part of Fa Shan but became separated by marine erosion to form a standalone sea stack. The site is marked by a giant blue anchor-shaped stone at the trailhead and is a popular destination for hikers and nature enthusiasts.