DIOCLETIANOPOLIS (Mitko Madzharov – m_madjarov@abv.bg, Dimitrinka Tancheva) The explorations in room No. 2 of the thermae continued. The lowest stratum was 80 cm thick and contained bricks from the collapsed vault of the ceiling and Late Antique sherds. The walls of the room were preserved up to 3.50 m in height. The water-conduit, which supplied mineral water for the pools in the neighboring room No. 1 (caldarium), was discovered. The water-conduit was 10 cm wide and 15 cm high, built of stone slabs and covered with bricks and stone slabs. The entrance between rooms Nos. 2 and 3 was discovered, with a marble threshold and jambs built of bricks. The entrances between rooms Nos. 1 (caldarium) and 2 and between rooms Nos. 2 and 4 were documented, the latter one with a marble threshold. Terracotta rain-spouts were documented, incorporated into columns built of bricks, which reinforced the walls and supported the vault of the ceiling. Room No. 2 was dry and no water procedures were carried out there. It was probably a tepidarium.