The hexagonal rock columns, prominently displayed in Sai Kung, represent Hong Kong's most iconic and globally significant geological heritage. Sai Kung features an intricate coastline and numerous islands. Lacking natural barriers, the eastern coasts are continuously shaped by wind and wave erosion. This relentless environment perfectly reveals the grandeur of the hexagonal rock columns. Key areas for viewing these columns include Jin Island, Fa Shan on High Island, the Ung Kong Group, and the Ninepin Group. The coastlines are marked by steep cliffs, showcasing well-defined hexagonal rock columns and offering visitors stunning views of coastal erosion formations and breathtaking landscapes.
In October 2022, the Early Cretaceous rhyolitic columnar rock formation of Hong Kong Geopark was selected as one of the first 100 IUGS Geological Heritage Sites. This recognition signifies its global importance, as acknowledged by international scientific organizations as one of the world's 100 most vital geological heritage sites. For further details on the IUGS Geological Heritage Sites, please visit iugs-geoheritage.org.
