20 km away from Shabla is situated the town of Kavarna, with population of about 13000. Here where the modern town exists there was an fortress, called Bizonne, founded by Greek colonists in the 5th century BC. However, crucial earthquakes destroyed both the town and the fortress, and some parts of the rocks sank under the sea. In the 2th century the Romans rebuilt the town and it became an important military and cultural centre of the province, called Malka Skitiq. The city was destroyed by earthquakes and part of the rocks felt into the sea. Later the Byzantines used the fortress, too. In 14th century the town was a centre of the semi - independent Dobroudja principality, ruled by the boyars Ivanko, Balik and Dobrotitsa. It was called Karvunska Hora.
