Archaeologists found pieces of a unique defence system in Sozopol

Excavations in the Old city in Sozopol wielded results - archaeologists found two towers, about a 100 metres apart, revealed the newspaper Dnevnik. The towers are a part of a unique defence system, circling the whole city, said the chairman of the Sozopol foundation Kiril Arnautski. Archaeologists found the towers while working on conserving and restoring the defence walls. Their activities are