High Island is uniquely formed by basalt. Around 140 million years ago, the eastern part of China experienced a period of volcanic activity. During that period, several large volcanoes were found in Hong Kong, one of which was located in what has become present day-Sai Kung. When the modern lava layer cooled down, hexagonal pillars were found and these were distributed in High Island, forming an impressive landscape.


  • Title: Sai Kung Volcanic Rock Region

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