Japanese tunnel (Mt. Nicholson, above Wong Nai Chung valley) [????- ]
Where is it? I was decending from the Radio station at the top of Mt. Nicholson, following a square pipe, all the way down hill, until I want to make a left turn near the location shown on the map. I was trying to break through the woods so that I could quickly get down to Wong Nai Chung road. Then I came across this tunnel opening.