Inthe course of work on the fausse-braye of a medieval fortress in the city of Belgorod-Dnestrovsky some interest­ ing results related ancient Tyras have been obtained. The pit no. 16 is located 30 m north of the Kiliya gate; excava­ tions were made to the maximum level of 5 m from the modern surface. During the study there were discovered remains of buildings belonging to different periods of the existence of ancient Tyras. In the upper layers there were found remains of a building of the Roman time. Lower there were discovered parts of premises, dating back to the Hellenistic period. The Hellenistic layer was saturated with pottery, which allowed dating the remains of buildings. Mnst of the pottery is frBgments of Greek amphorae, among which there were found 15 stamps, which quantita­ tive distribution by the production centers is the following: 1- Knidos, 1- Sinope, 12 - Rhodes, 2 - undetermined ones. Stamps of these centers, with similar dating, have been also found in other parts of the ancient Tyras, located outside the pit no. 16,behind the walls of the medieval city.