Lai Chi Kok
The Lai Chi Kok Drainage Tunnel encircles Sham Shui Po and Lai Chi Kok. It is a 3.7-kilometre tunnel, stretching from Shek Kip Mei to an outfall near Stonecutters Island, built at a cost of $1.7 billion. Construction commenced in November 2008 and the tunnel was commissioned on 18 October 2012.