Saltpeter Cave in Syracuse
 Via del Teatro Greco - Siracusa SR
Saltpeter cave is located inside the Latomia del Paradiso, in the Neapolis Archaeological Park.
The cave has a gigantic boulder collapsed from the vault at the entrance. On this boulder the detachment planes of the limestone blocks are visible, almost in the form of steps.
Other caves present in the Latomia del Paradiso are the Ear of Dionysius and the Grotta dei Cordari .