The Drop Redoubt was a key element of the Western Heights fortifications. Crossing the area inside the Redoubt today is a covered way linking the Parade Ground with the entrance of the Main Magazine. It is sunk 1.8m for protection and has a large earth bank along its eastern side. The principal magazine for Drop Redoubt is a bomb-proof vaulted structure covered by an earth mound, the latter some 3.5m high. Access is gained along a covered way which splits into three, the branches leading to the Parade Ground, Officers’ Quarters and the southern part of the terreplein. The current arrangement includes an original free-standing magazine completed in 1806 and which had a capacity of 320 barrels. (location accurate to the nearest 1m based on available information)