Here's looking at you, kids
Many column inches have been written on our planners' predilection for covering our countryside walks in concrete and fencing them in, but 'enhancements' in a park in Sha Tin have taken such excesses to new heights.
Yuen Chau Kok is an urban park used by many elderly people, so the concrete and rails along its Upland Trail are mostly justified. What aren't are the traffic mirrors placed at the angles where pathways meet. These paths are narrow, fairly steep and off-limits to bicycles and other types of vehicle, and while there could, conceivably, be a child bowling down one of them as an old-timer is climbing another, both parties would see each other well before any collision because there is little foliage around where the tracks join. The greater danger would be the child running into a mirror's pole.
I may be wrong; perhaps there is an unusually high number of residents in Sha Tin with no peripheral vision and who are only able to incline their head, not turn it (there might be a special unit for them at the nearby Prince of Wales Hospital) - or, maybe, there was surplus budget to use up last time Yuen Chau Kok Park was renovated.