THE CHURCH OF ST. JOHN THE BAPTIST (Todor Marvakov – tmarvakov@abv.bg) Explorations of the Church of St. John the Baptist in Nesebar, built in the 10th century, were carried out. Sondage No. 1 was carried out in the western end of the northern nave of the church, close to the northwestern pillar supporting the dome. Grave No. 1 of an adult was discovered. Traces from coffin were documented. An Ottoman coin of Sultan Abdülaziz I, minted in Constantinople in 1861 – 1862, was found under the skull of the deceased. At least two earlier burials were destroyed when the grave was dug out. Sondage No. 2 was carried out in the eastern end of the northern façade of the church. Grave No. 2 of a child was discovered. Traces from coffin were documented. A layer of roof tiles of the end of the 4th – beginning of the 3rd century BC was explored at 2.20 m in depth, consisting of Corinthian tegulae (Heraclea Series), Laconian imbrices (Heraclea Series) and Corinthian imbrices (Moscho Series). The roof tiles originated from a Hellenistic building situated under the foundations of the church.