H The Green Tank X PHOTOS      TEXT The Green Tank was the largest cistern of the Fortress, capable of holding 100,000 gallons of water collected in the semi- circular area once paved as a water catchment. Visit other Areas >> A- The Parade Ground B- The Visitors Centre C- The Canteen D- The Infantry Officers' Quarters E- The Artillery Officers' Quarters F- The Citadel G- The Prince of Wales Bastion H- The Green Tank I- The Orillon Bastion J- Magazine Bastion K- The Lime Kiln or back to Map