Pengilih Point
6" Battery
- Searchlight emplacements
- Pillboxes, bunkers etc
- Mysterious concrete block
- Officer quarters
- Water tower 
- Main barracks
- Toilet blocks
- Concrete court yard & cook house
- Concrete trench
- Oil storage tank area
- Underground engine room (+ layout plan)
- Engine room air vent shafts + escape tunnel

Pengilih Point / Engine room air vent shafts & escape tunnel / #8a, #10 on the layout map

The engine room escape tunnel exit with metal ladder. It's possible that originally this opening would have been covered with a sealed hatch or metal cowling.   There were from what I could see 2-3 air ventilation shafts (now blocked off) which connected to the central underground engine room.

Notice the metal box frame around the openings of these vent shafts, perhaps it had metal louvered sides originally.   A rusty ladder lay at the bottom of one of the cylindrical shafts. Note the rope tied around the rungs of the ladder, perhaps used by thieves to scavenge material.