The Air Raid Shelter: This site is only 30 meters beyond the fence at the Kapok Tree. Once you pass through the fence you can see the brick work of the entrance quite easily. There is a trail leading to the base of the brick work. The entrance tunnel of the Air Raid Shelter is quite low and taller people will need to bend down to go through. This entry tunnel is approx 2 – 3 meters in length. On the right, at the far end, there’s a drop down into the Air Raid Shelter room. There’s not actually much to see here. The floor is quite muddy and the walls are covered in graffiti. To the left side of the outer brick work, a steep trail takes you up to a narrow sealed road (Wishart Road). At this road turn left, then walk about 50 meters downhill to a fork on the right. Take this to get to the KEPPEL HILL RESERVOIR. Click on Keppel Hill Reservoir for more directions. Safe travels, Mega.

The easiest way to access it is from the carpark, left side of Heritage Kapok Tree. It is literally a 30 seconds walk to the bunker at maximum. The bunker is larger than I thought it would be as it extends off near the end (possibly an attempt to conceal the real bunker). The second room is a little bigger than the first room, so not much to see.

Air raid shelter is just behind the Kapok Tree. However, when I last visited on 25 May 2025, the fence is all fenced up and there is no opening to get in. Need to enter from Wishart Road then Keppel Hill. There is a small path on the right side of the road towards the air raid shelter. It is quite steep and can be very slippery after rain.

My visit to the Seah Im Bunker closes the 3 Keppel Hill historical attractions. (Bunker, Reservoir & Tomb) It all can be done in one go. It starts at the Seah Im carpark, there a huge icon heritage Kapok tree leads to the entrance. It requires to sneak around the fence and after a view steps, much closer as expected, the Bunker can already be seen. There is practically no public information about this (as well as other unknown) Bunker at Keppel Hill, but it was likely built before WWII and used as a storage place for equipment and ammunition or even the imprisonment of prisoners-of-war. It is however not clear. It is quite easy to enter the about 1 meter entrance but it gets completely dark afterwards. The main Bunker has a hight of about 2.5 meter. (And here I realised that my hand phone flashlight is merely a toy and of no use) A picture from the inside Bunker is therefore ‘borrowed’. An old rusty pipe next to the entrance is most likely a remaining water pipe from the Keppel Hill Reservoir. On the left side a steep uphill pass is the way towards the Reservoir. (Even an experienced hiker may better use the installed ropes for better safety. After rain its slippery and should be avoided!) Seah Im Road began as a private road in the early 20th century. It was built at the request of Ang Seah Im (died in 1927), a wealthy Hokkien tin mining businessman with properties at Telok Blangah. In 1907, the Municipal Commission named it Seah Im Road, after Ang Seah Im met the requirements of installing lighting, fences and embankments on his new private road. One of the early notable landmarks at Seah Im Road was the Keppel Harbour Community Centre, built by the Social Affairs Ministry in 1957 at a cost of $40,000. The People’s Association took over and manage it in 1960. The community centre served the Telok Blangah residents well for more than two decades until the early eighties.

If u like nature, it will be fun and enjoyable, especially for first timer, will be challenging, Parking is convenient and nearby there is a hawker.