Photo: CC BY-SA 2.5
Perched on the rugged eastern edge of Sai Kung Peninsula, High Island Reservoir East Dam is a striking fusion of engineering and nature. The dam itself is a colossal structure, but what truly captivates visitors are the hexagonal volcanic rock columns that line the reservoir's shores — a geological wonder formed 140 million years ago. The area offers dramatic coastal scenery, clear turquoise waters, and a sense of remote wilderness that feels a world away from Hong Kong's urban bustle.
Highlights & What to See
- Hexagonal Rock Columns: Marvel at the UNESCO-recognised columns of volcanic tuff, some towering over 100 metres, which form one of the world's finest examples of columnar jointing.
- East Dam Viewpoint: Walk along the dam for panoramic views of the South China Sea and the rugged coastline, with waves crashing against the dolosse armour blocks.
- Sea Cave & Wave-Cut Platform: Explore the sea cave near the dam and the wave-cut platform where the rock columns meet the ocean — best visited at low tide.
- Ping Chau Island View: On clear days, look east to see the distant outline of Ping Chau, an island with its own unique geology.
- Geopark Visitor Centre: Stop by the nearby Sai Kung Volcanic Rock Region information centre to understand the area's volcanic history.
Suggested Time to Spend
Allocate half a day (3–4 hours) to fully appreciate the East Dam and its surroundings. Start early to avoid the midday heat and crowds. Combine a visit with a hike along the MacLehose Trail Section 1, which begins near the dam and offers stunning coastal views. Bring plenty of water, sun protection, and sturdy shoes — there's little shade.
Nearby Areas Worth Combining
- Sai Kung Town: A laid-back fishing town with seafood restaurants and a lively waterfront, perfect for a post-dam meal.
- Sharp Island (Kiu Tsui Chau): A short kaito ride from Sai Kung, featuring tombolo sandbars and clear waters for kayaking.
- Long Ke Wan Beach: A pristine white-sand beach accessible via a short hike from the East Dam, ideal for a swim.
- MacLehose Trail Sections 1 & 2: World-class hiking trails that traverse the Sai Kung Peninsula, with dramatic coastal scenery.
- Tai Long Wan (Big Wave Bay): Four stunning beaches linked by a trail, offering surfing and camping opportunities.
Please check official sources for current details.
Note: opening hours, prices and booking requirements change often — please check official sources for current details.