ST. JOHN ISLAND NEAR SOZOPOL (Oleg Alexandrov – oleg_alexandrov@abv.bg) A fortification wall was documented at c. 50 m to the north of St. John Prodromos Monastery. The wall was over 700 m long with numerous branches and several presumable gates or buttresses and it partitioned the island. The protected territory in the southern part of the island was c. 7 ha. A sector of the wall, 12 m long, was explored. The wall was 1.40 m wide with both faces built of ashlars and an emplectum of smaller stones bonded with mud. Fragments from tegulae and imbrices of the 4th – 3rd centuries BC were found and probably this is the date of the wall. In the Lighthouse Sector a sondage was carried out over a pile of earth 8 – 10 m in diameter where two branches of the fortification wall met. Fragments from amphorae, tegulae and imbrices of the 4th – 3rd centuries BC were found. Probably, these were the remains of the ancient lighthouse on the island. A coin of Apollonia of the 2nd century AD shows the lighthouse as a two-storey cylindrical building with a fire on its top. The fortification wall indicated that a settlement existed on the island and probably a small garrison was stationed as well.