AQUAE CALIDAE – THERMA (Dimcho Momchilov – karnobat.muzey@mail.bg, Miroslav Klasnakov) The explorations of the fortification wall 2.50 m wide, discovered in 2012, continued. A sector of the wall, 20 m long, has been explored so far. The wall was probably built during the second half of the 8th century AD over several rooms of the 4th – 6th centuries AD. Four reconstruction periods and two fires were documented in the rooms. The roofs collapsed during the fires. Some of the rooms were used for food storage and two dolia were discovered there. Other rooms were workshops and a kiln and large quantity of slag were discovered. Several graves of the 4th century AD were explored, probably belonging to the cemetery discovered in 2012. Judging from the coins and the pottery, the first fire dated to the 4th century AD when the Goths burned the thermae and the second one was related to the invasions of the Avars at the end of the 6th century AD. The latter is supported by a recently discovered inscription that mentions the military activities of the Byzantine general Kastos who fought the Avars. A stratigraphic profile was explored, 2 m thick, showing the layers from the 4th to 6th centuries AD and during the 11th century when intensive building activities occurred. A large number of coins dated after the 11th century, sgraffito pottery and Byzantine lead seals of the 11th century were found. A pediment was discovered and Macedonian coins of the 4th century BC and fragments from marble statuette were found in front of it. The finds from the excavations included over 600 coins, mostly Early Byzantine, eight Byzantine lead seals and sherds, mostly Early Byzantine and from the 11th – 12th centuries, including from sgraffito pottery.