The structure, which was found to be one of a number of reservoirs built by the Knights for water storage in the fortified city. However, it’s not in a great state, with missing arches and broken slabs having rendered it unstable and as it stands, rather unsafe.
“It hasn’t been used since the war for sure, since it contains rubble that could indicate material from shelters that were dug near by,” Steven Mallia from Il-Ġibjun told local newspaper Times of Malta. Also found on site were pots and pans, as well as some other objects.
The reservoir, although forgotten, was indeed documented by the British and had a capacity of 1,500,000 litres!