ARCHAEOLOGICAL EXPLORATIONS IN SEXAGINTA PRISTA (Varbin Varbanov – ramonearhaeology@abv.bg, Deyan Dragoev) Thirty-two Thracian ritual pits were explored. Six clay and two stone platforms were documented. The pits were 1.10 – 3.60 m deep and 0.60 – 4.50 m in diameter. They contained bones, small pieces of charcoal, fragments of clay plaster, fragments of dolia, flints, six spindle whorls, two whetstones, a bone whistle, a bronze finger-ring, an iron tool, a terracotta bead, a bronze arrowhead, seven stamped handles from amphorae, sherds, etc. The pits date to the 1st century BC – 1st century AD. The Principia was thoroughly explored. Part of the northeastern long wall of the Principia had collapsed, probably due to the earlier tunnel situated under the wall. The tunnel is 1.75 m high and 50 – 80 cm wide and probably dates to the 2nd – 3rd centuries AD. It had been filled with earth after the collapse that occurred at the end of the 4th century AD, judging from a coin of Emperor Valens. Fragmentary tegulae and imbrices and Roman sherds were found inside the tunnel. Eight pits and a building of the 19th century were discovered. Five Ottoman coins (three of them minted by Sultan Abdülmecid I: emission 1839), fragmentary building ceramics, sherds, broken glass, tobacco pipes and other objects were found there. During the excavations of the site, two Hellenistic coins, two coins of the 3rd century AD, eight coins of the 4th century AD, one coin of the 6th century AD, one coin of the 11th century, and 10 Late Ottoman and one European coin of the 19th century were found.