The excavations of 2010 undertaken in the theatre of the ancient city of Apollonia were located in seven sectors, some of them opened since 2006. Excavations undertaken in sector T, at the northern parodos, revealed traces of the scaena wall, the supporting wall at the northern slope of the hill, and the northern analemma wall. The stratigraphic units uncovered, 263, 273 and 274, correspond to the perimeter extent of the Roman orchestra. In addition, the results confirmed the adoption of the orchestra as an arena during the transformation of the theatre in Roman times. Below the natural bedrock of the hill, a layer of river gravels was documented, which was probably used as a supporting level for the theatre cavea. The only remains of the Hellenistic cavea were recorded in the cut feature V. In a layer of stone rubble, three inscribed geison blocks containing traces of red paint, were revealed. The inscription read: MARKIOSA I ULOUUIO I STARANTINOSANA. Also, in sector T (the stoa area) an in situ stylobate block of the western facade of the stoa was uncovered. A long robber trench was noted in this area, which shows that the corridor of the stoa was approximately 5m wide. The same was observed during the excavation of 1976, in trench 37. Also, the excavations proved that the arms of the stoa were longer that had been so far assumed.
In sectors B and C, at the terrace extended to the west of the theatre’s stoa, a dwelling with brick walls, which is likely to date at the 4th – 3rd Centuries BC, was uncovered. It is obvious that a relationship between the terrace and the theatre existed. Also, a possible relationship between the theatre and the magistral road were tracked in sector H. While in sector O, the removal of stone blocks which were accumulated from the previous excavations initiated.
The anomalies observed in the upper part of the cavea (aligned more or less in the axis of the orchestra) during the geo radar investigations of 2008, led to the opening of the new sector D. The excavations in sector D, revealed parts of the upper enclosing wall of the cavea, which runs parallel to the orthostat wall, and ends approximately 7-8 m south of the northern enclosure.
Bricks wall lines joined with mud mortar were documented in this area. Also, traces of 4th – 3rd Centuries houses were noted in sector E, which has been probably destroyed for creating a ground for maneuver at the time of the theatre’s construction. A diversity of artifacts were revealed, dating from the 4th – 3rd BC to the 2nd – 3rd Centuries AD.