A small postern (auxiliary) gate was located immediately north of the second tower on the eastern side.

The northern of the two walls to the sea is well preserved, stretching 370 m to a final tower of which the foundations and fallen blocks are now underwater.

The northern wall consisted of six towers and a fortified gate running in a nearly straight line from the northwest corner of the citadel to the sea.

In general terms, these walls are among the best preserved of any of the Hellenistic period and show a high level of skill and finish.

Lawrence opts for a date in the late 4th century BCE, on the assumption that Demetrios Poliorcetes built the fortress rather than simply occupying it.

A five-aisled Christian basilica was erected in the lower fortified area in the medieval period, and there was a monastery complex within the citadel.