ARCHAEOLOGICAL EXPLORATIONS IN PLISKA (Yanko Dimitrov – yanko_aim@mail.bg, Hristina Stoyanova) Postholes, adjoining the outer Г-like foundation trench of the long timber building, were explored in squares 2-3/A-B. Two rectangular postholes of vertical timber beams were situated at 2 m from each other and measured 1.40 m by 1 m. The exploration of the long stone building continued in squares 2-3-4/G-D. The southern wing of its eastern part was occupied by a single room. The walls were constructed of stones and fragmentary bricks bonded with mud and clay. The semi-dug sunken-floored house, situated under the foundation of the eastern wall, was completely explored in square 5/G. Pottery and three anonymous Byzantine folles of Class A2 (AD 976 – 1030/1035) were found. A pavement of fragmentary mortar, bricks and boulders, 3.50 – 7 m wide and up to 30 cm thick, was explored in squares 3-4/G-D, under the foundations of the long walls of the stone building. A new part of the long stone building, continuing to the west and parallel to the southern fortification wall, was documented. It was constructed in rubble masonry with a bonding medium of clay. The stratum of the 8th – 9th centuries AD was documented. It contained charcoal, iron slag and melts, fragments of melting pots for producing objects of copper and bronze, and a fragment of a pitcher with an incised drawing of a winged horse. Rows of postholes dug into the ancient terrain and the two foundation trenches of the long timber building were documented at 1.20 – 1.40 m in depth.