It most likely dates all the way back to the classical period.
During an archaeological monitoring site of the trenching works being carried out by the Water Services Corporation in the limits of Zejtun and Marsaxlokk an ancient quarry was discovered.
The area was discovered by a Superintendence Cultural Heritage approved archaeologist. The organisation was on site due to the high incidence level of previously discovered archaeological sites in the area.
The Ancient Quarry was first discovered when rock-cut surfaces that visibly showed toolmarks were noticed, leading the authorities to be instantly notified.
It’s difficult to ascertain from what period the quarry is from as no specific material was found within the quarry.
However, they think the quarry is from the classical period due to the ashlars still in situ and the overall typology of the structure.
Facebook/Superintendence of Cultural Heritage