A depression on the coastline, formed a natural cove that was probably used as the town’s first harbour (1). It was situated to the southeast of the ancient Agora (2) and continued below the modern coastal road (3).
Today, that inner harbour is totally ‘invisible’ as gradual silting during the Hellenistic period (3rd to 1st centuries BCE) led to an extensive progradation of the coast tens of metres towards the sea. It is also possible that this process was accelerated by the construction of the outer harbour, at the end of the 4th century BCE.