Above and right: Trees fringe an old landfill site at Sai Tso Wan, near the Kowloon entrance to the Eastern Harbour Crossing. It is one of 13 old landfills still releasing liquid leachate and gases, the natural decay products of organic waste. Centre right: Methane gas is collected from the landfill and piped for burning off at
temperatures up to 800°C. Hong Kong's municipal solid waste is now deposited at three large modern strategic landfills in the New Territories. Five old landfills have been restored and the rest will be restored by end of the century, apart from the Pillar Point Valley landfill, which was closed only in 1997.
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