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Cave of Ash Dregs

Cave of Ash Dregs

Around the tip of North Bay lies one of Peng Chau's wonders - Hong Kong's (or even the world's) only such historical relics, a cave of ash dregs formed by mankind and nature together. To trace its source, we need to step back in time and look at the development of limekiln industry on Peng Chau.

A limekiln factory was once established in North Bay. Processed ash after sifting can be divided into two grades. The first grade ash can be used as auxiliary materials, for plastering (in construction), food or industrial processing (such as sugar making or tannery treatment), while the second grade can be used to make lime bricks. The remaining ash dregs would be dumped along the seaside which in time accumulated into a small hill. Weathered out by the wind, rain and sea-water, a cave was eventually formed. During rainy seasons, stalactites can be seen inside the cave.

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