35ｺ 39', Long.

11ｺ 3', and was defended by a triple enclosure, whereof considerable remains are still existing.

The outermost of the three lines appears to have consisted of little more than a ditch and a palisaded rampart, such as the Romans were accustomed to throw up whenever they pitched a camp in their wars; but the second and third were more substantial.

The second, which was about forty yards behind the first, was guarded by a deeper ditch, from which rose a perpendicular stone wall, battlemented at top.
The third, forty yards further back, resembled the second, but was on an enlarged scale, and the wall was twenty feet thick.[5103] Such triple enclosures are thought to be traceable in other Phoenician settlements also;[5104] but in no case are the remains so perfect as at Thapsus.

The harbour, which lay south of the town, was protected from the prevalent northern and north-eastern winds by a huge mole or jetty, carried out originally to a distance of 450 yards from the shore, and still measuring 325 yards.