MARKELI FORTRESS (Dimcho Momchilov – karnobat.muzey@mail.bg, Rositsa Hristova) The Mediaeval fortress Markeli is situated on Hisar Hill. A rampart with a ditch protected the fortress from the north – northeast, where the easiest access towards the fortification was situated. The northern rampart is identical to the southern inner rampart of the fortress. A stratum containing sherds of the Bronze Age (probably the Early Bronze Age) and fragmentary wattle-and-daub was documented to the southwest of the fortress, beyond the outer rampart.