AQUAE CALIDAE – THERMA (Dimcho Momchilov – karnobat.muzey@mail.bg, Miroslav Klasnakov) A sector of the western fortification wall was discovered, 14 m long and preserved over 1.90 m in height. The wall was built of partly-cut stones and ashlars bonded with mud, leveled with stone slabs and bricks, with a core structure of roughly-cut stones. Spolia from earlier structures were also reused. The wall was hastily built during the 11th century, because of the invasions of Pechenegs and Cumans. The finds included coins of the 11th – 12th centuries, arrowheads of the 12th – 13th centuries, sherds of the 11th – 12th centuries, including from sgraffito pottery of the 11th – 13th centuries, a celadon. The northwestern tower of the Early Byzantine fortress was discovered. It had a circular or U-like layout, built of roughly-cut stones bonded with mortar. The finds included fragmentary building ceramics and sherds of the 6th – 7th centuries AD, sherds of the 9th – 12th centuries, including from sgraffito pottery of the 11th – 13th centuries, a Byzantine lead seal of the 11th century and coins of the 11th – 12th centuries.