Karnobat Municipality

Karnobat ( ) is a town in the Burgas Province, Southeastern Bulgaria. It is the administrative centre of the homonymous Karnobat Municipality and lies in the Karnobat Valley. According to the 2021 census, the town had a population of 16,483.

municipality in Burgas oblast, Bulgaria

792 battle of the Byzantine-Bulgarian Wars

Markeli (; , Markellai; ) was a medieval Byzantine and Bulgarian frontier stronghold, the ruins of which are located in Karnobat Municipality, Burgas Province, southeastern Bulgaria. Dating to Late Antiquity, the castle lay some from the modern town of Karnobat. It was the site of two notable medieval battles between Byzantines and Bulgarians, the Battle of Marcellae of 756 and the Battle of Marcellae of 792.