Tunnels above Lower Shing Mun Reservoir [????- ]

Position of the marker is approximate. The two tunnel entrances are off to the side of the road, and the metal barriers across their entrances make them clear to see.

Usually I'd consider tunnels of this size to be from the Japanese occupation, but there was also a lot of mining in this area (see the Needle Hill Tungsten Mine) so the tunnels might be connected with that instead.