The so-ctod Cave di Cusa, where the limestone bank, surfacing for a noticeably long stretch, offers the possibility of making larger pieces needed for city works. The great capitals and the equally imposing columns of the temple G were cut here thanks to a wise use of metal instruments. The pieces, after having been almost entirely made, were removed from their matrix thanks to the jack effect produced by expanded wooden wedges due to the effect of water. The Quarries of Cusa do not have comparisons for their amplitude and for their incredible state of preservation that allows the analysis of all the phases of stone processing.
The quarries were in usand from the 6th century BC until the end of the life of the Greek city. A traumatic event - the Punic conquest - determined the moment of sudden interruption of the quarry work. The pieces were left where they were, some just rough-hewn, others completely finished and already left for the long journey to the destination.