The position of the marker on the map is approximate, but if you're walking up the trail from the reservoir, the r-shaped concrete is on the right of the path.
I didn't see any others nearby, but I didn't make a thorough search. <Read more ...>
Download free sample chapters, or buy the books:
Click on your area of interest to choose from over 30,000 pages about old Hong Kong:
Or choose a popular article: