Departing from the entrance of Aberdeen Country Park, follow the shaded path that leads past a number of country park facilities, including a kids walk, Aberdeen Tree Walk and the Aberdeen P.H.A.B. Barbecue Area. Continuing along a path that runs alongside a catchwater, you will arrive at a junction. At this point, head towards the direction of Wan Chai Gap. Alternatively, you may turn right to go to Aberdeen Reservoirs Walk (Lower Reservoir Section). This path is not only abundant in greenery but also rich in history of the World War II. For instance, near a pavilion by the junction, you will find a morning walker garden with several "Type A" shelters made of reinforced concrete quietly nestled in the woods. In the late 1930s, the British garrison established defense positions in the valleys and constructed over a hundred “Type A” shelters and locality pillboxes. Depending on the needs of the operation, these shelters served various purposes, including command posts, living quarters, dressing stations, and storage spaces, etc.

As you gradually ascend towards Wan Chai Gap, you will reach a junction of Aberdeen Reservoir Road and Lady Clementi’s Ride. Turn right and walk approximately 180 m along Lady Clementi’s Ride, you will reach Locality Pillbox 12 (LPB 12), which is one of the three locality pillboxes of the Aberdeen Reservoirs Defence Position. During the Battle of Hong Kong (8-25 December, 1941) in World War II, this locality pillbox was manned by the Winnipeg Grenadiers of the Canadian Army. LPB 12 features two embrasures protected by steel shutters, facing southeast and allowing for a firing arc of approximately 100 degrees. When visiting, please respect the historic relics and refrain from entering or damaging them. After your visit, retrace your steps back to Aberdeen Reservoir Road and continue upward to Wan Chai Gap, which marks the end of the Aberdeen Reservoirs Walk.

_{To facilitate the public in planning their hikes, the geographical information of the route, including the route map, starting point, endpoint, and elevation chart, has been saved in a "GPX" file. The public can download hiking-related applications on their smartphones or smart watches, then click on the following "GPX" file to import the relevant information, which serves as an aid for hiking. Please note that downloading "GPX" files may increase data usage, and the functions and content display may vary depending on the device and application used.}