ARCHAEOLOGICAL EXPLORATIONS ON ADA TEPE HILL (Hristo Popov – popovhristo@yahoo.co.uk, Krasimir Nikov) Late Bronze Age buildings inside the fortified area were thoroughly explored in Sectors G-11 and F-11 on the top of Ada Tepe Hill. The buildings had oval layouts, plinths of stones and walls of clay. Burned timber constructions were documented, probably from the roofs or the upper parts of the walls. Buildings Nos. 1, 2, 3, 6 and 17 outside the fortified were thoroughly explored. They had similar construction and rectangular layouts, being partly dug out into the slope. The finds included sherds, flint tools, stone adzes, fragmentary moulds, bronze tools, terracotta spindle whorls and loom weights. Sectors I-7 and H-6 were thoroughly explored on the higher northeastern slopes of the hill. Debris from fortification wall over 100 m long was discovered and houses and farm buildings were constructed above them situated in at least two rows. Ten buildings with rectangular and oval layouts were explored and their construction was similar to the Late Bronze Age buildings on the top of the hill. The construction of the buildings in Sectors I-7 and H-6 was simultaneous, according to a plan. Mine shafts some of them over 4.50 m deep in Sector I-9 and a work platform for primary sorting out and processing the gold ore in Sector J-9 were thoroughly explored on the eastern slopes of the hill. Sherds, fragmentary stone tools, animal bones and charcoal were found in the tailings.