Volcanic Rock Dissolution

Wang Chau at Sai Kung
Wang Chau (Photo by Chensong)

Wang Chau is a small outlying island at the southeast of Sai Kung and belongs to the Hong Kong Global Geopark. It is part of the Early Cretaceous Kau Sai Chau Volcanic Group.

Here hikers can see stunning geological sceneries, such as volcanic rock columns, sea caves, sea-cut platforms and so on. The rock minerals in these volcanic rocks are very vulnerable to dissolution and some of them dissolve several times quicker in seawater than in freshwater.

How to Get There

No public transportation. Please rent a boat at Sai Kung Pier.

Chinese Translation

Wang Chau: 橫洲
Kau Sai Chau Volcanic Group: 滘西洲火山群

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In 2003, I moved to Hong Kong with a dream of traveling around the world. Later I found out, HK is an amazing "mini world". Other than skyscrapers, a few steps outside the modern city, it has steep hills, winding coastlines, outlying islands, millions of years volcanic rocks, remote beaches, unspoilt fishing villages, secret waterfalls, wild animals and ancient forests. Follow me now to explore the Hong Kong less traveled.