A large tunnel network with a shape like capital letter "H", there is 3 exits, 1 staircase and many junctions.
one exit MGRS: 50Q KK 10884 74957
Go there by following the ribbons facing south at No7 marker stone of War Relics Trail (Lion Rock and Ma On Shan)
below is a video of it:
Twenty metres below the summit of Golden Hill on the north side is a large Japanese tunnel network comparable to that found on Smuggler's Ridge. There are several entrances and at least two loopholes with brickwork to fire on attackers climbing up from below. Some sections have filled in and at least one rockfall was noted, but otherwise the tunnels are clean.
This tunnel is close to the unpaved trail leading up to Pinewood Battery Heritage Trail. The entrance is immediately visible when you walk by. It is a small tunnel with only one entrance, and turns right with a dead end. There is a pair of light holders (are they?) made on both sides of the walls in the right branch.
This is a small tunnel with two entrances above Governer's Walk below Victoria Peak Pagoda. It is located near the larger gated cave (Left): Gated Tunnel on Governors Walk, below Victoria Peak Pagoda. I was actually guessing that they might be connected, but it turned out the left branch of the gated cave is a dead end despite directing towards this tunnel.
The northwestern entrance seems a good observation site, given that the bushes are cleared out. After all, it has almost the same view as the lookout point slightly above the hill.
Here is the look of the side of PB 022 with Sha Shek Tan at the far end background.
A fairly large complex with 2 exits, several turns and chambers. It's very easy to reach from the main path leading up to Mount High West. Turn left right before the first major stairs begin to ascend up the mountain. You will walk West and come across it to the right of the path after a very short walk on the well trodden ribbon trail. There's also a trench system S of the Tunnel.
This small tunnel entrance is situated gently uphill, a good 10m from the hiking trail. The general location is NW of the Pinewood battery.
There seems to be another one nearby which I couldn't find: https://gwulo.com/node/2898
To my eyes they look different.
This tunnel is near the Wartime Stoves on the Quarry bay
A major position with long trenches and a at least 2 Tunnel entrances. One big entrance collapsed in the hillside and one smaller vertical entrance on the level of the trenches.
Tunnel rats are welcome to explore.
There's also a long waterpipe skirting around the slope from West to East. Don't go further downhill as the tunnels and trenches are just 10 to 15m above it.
Stumbled across this completely overgrown hilltop position while following the ribbon trail traversing the N ridge of Mount Cameron.
There's a very small dug out tunnel with 2 entrances and a trench leading to a fortified position some meters away. Was late in the day so didn't explore much more. One for the Military buff's to check out. It's very easy to reach following the ribbon trail from the power mast going uphill.
