Flagstaff House/Victoria Barracks tunnel [????- ]
"The U-shape disused tunnel is reckoned to be used for shipment of ammunition during the war time and might have been abandoned or filled up after the war time." according to govt study this year. Says CEDD doesn't have further details. Map included in the Heritage Impact Assessment for new pumping station. http://www.amo.gov.hk/form/HIA_Report_Cotton%20Tree_%20Drive_%20FWPS.pdf