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| High Island | Sharp Island | Ung Kong Group | Wang Chau | Basalt Island | Ninepin Group |
| Ma Shi Chau | Lai Chi Chong | Yan Chau Tong | Bluff Head | Tung Ping Chau |
| Port Island | Kat O | Ap Chau | Lai Chi Wo |


Typical coastal terrain–Basalt Island

Background Information

Background Information


Basalt Island has no tourist facilities (such as public pier or trail) available. To prevent accidents, please observe from a boat and avoid getting ashore.

Basalt Island is an island south of Town Island (Fo Tau Fan Chau) and Wang Chau, east of Bluff Island (Sha Tong Hau Shan) and north of the Ninepins. Only 174 metres at its highest point, it was the site of an air disaster in 1948. An aircraft coming into Hong Kong from Shanghai crashed on the island, killing all 30 crew members and passengers. Sixty years have since passed and all traces have been erased by swells and typhoons. Only an air disaster monument remains on the island to recall this tragic accident.


Geological Information

Geological Information


Like Bluff Island and Wan Chau, the outcropped stratum of Basalt Island is part of the Early Cretaceous Kau Sai Chau Volcanic Group. The island has very well developed sea stacks, island reefs and wave-cut bays which clearly demonstrate the impacts of wave erosion on the environs. Waves, in forms of erosion, abrasion and dissolution, cause devastating damage to the shores. Given that the Kau Sai Chau Volcanic Group is full of columnar joints and fissures, impacts of pounding waves on rocks are particularly obvious. Meanwhile, continuous abrasion by sand and gravel carried by waves has brought changes to the shores and submerged bedrock, sculpting an amazing array of precipitous cliffs and spectacular landforms. In geology, wave cut action is one example of exogenous effect. The islands and wave-cut terrains in the Basalt Island region are excellent showcases that reveal how of this geological process modified geomorphology.


Landform Video

How to get there

Private boat hire is required or join a local tour. As there are many outlying islands in Sai Kung, it is a good idea to hire a boat at Sai Kung pier and sail around Jin Island (Tiu Chung Chau), Bluff Island, Basalt Island, Wang Chau and other islets. You can have a close look at the rugged primitive rock formations and spectacular rock cliffs that plunge deep into the sea.

(Note: Only suitable for days when the weather is calm and stable. To prevent accidents, please observe from a boat and avoid getting ashore.)






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